CN113509671B

CN113509671B - Fire extinguishing device

Info

Publication number: CN113509671B
Application number: CN202010279214.2A
Authority: CN
Inventors: 曹坚; 黄永明
Original assignee: Shenzhen Changke Safety Emergency Technology Co ltd
Current assignee: Shenzhen Changke Safety Emergency Technology Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2024-01-19
Anticipated expiration: 2040-04-10
Also published as: CN113509671A

Abstract

The invention discloses a fire extinguishing device, which is suitable for an indoor space where organisms exist, and comprises: a housing, on which at least one first through hole is formed; at least one fire extinguishing core, the fire extinguishing core is established in the casing, the fire extinguishing core is solid, the fire extinguishing gas that produces innocuity when the fire extinguishing core burns is suitable for through first through-hole spouts to the casing outside. According to the fire extinguishing device, the fire extinguishing core is made into the solid, so that no pressure exists in the shell, and periodic maintenance is not needed. In addition, because the fire extinguishing core generates nontoxic fire extinguishing gas when in combustion, the fire extinguishing gas can not cause damage to human bodies, so that the whole fire extinguishing device has fire extinguishing safety and is suitable for indoor spaces where people exist.

Description

Fire extinguishing device

Technical Field

The invention relates to the technical field of fire extinguishment, in particular to a fire extinguishing device.

Background

In recent years, with the rapid development of economic construction in China, the proportion of building fires is on the rise. The number of dead injuries caused by building fires is huge, and the direct property loss caused by the dead injuries also has a straight line rising trend. In the related art, fire extinguishing gases generated by a gas fire extinguishing system are generally toxic and have high pollution destructiveness, and can cause injury to people.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present invention is to propose a fire extinguishing device that generates a fire extinguishing gas that is safe and harmless and that can be used in spaces where people are present.

According to an embodiment of the present invention, the fire extinguishing apparatus is adapted to an indoor space in which living organisms exist, and the fire extinguishing apparatus includes: a housing, on which at least one first through hole is formed; at least one fire extinguishing core, the fire extinguishing core is established in the casing, the fire extinguishing core is solid, the fire extinguishing gas that produces innocuity when the fire extinguishing core burns is suitable for through first through-hole spouts to the casing outside.

According to the fire extinguishing device provided by the embodiment of the invention, the fire extinguishing core is solid, so that no pressure exists in the shell, and periodic maintenance is not needed. In addition, because the fire extinguishing core generates nontoxic fire extinguishing gas when in combustion, the fire extinguishing gas can not cause damage to human bodies, so that the whole fire extinguishing device has fire extinguishing safety and is suitable for indoor spaces where people exist.

According to some embodiments of the invention, the fire extinguishing apparatus further comprises: the fire extinguishing core is provided with a heating element, the circuit board is electrically connected with the heating element, and the circuit board controls the heating element to be electrified when at least two alarms give an alarm.

According to some embodiments of the invention, each of the alarms is a smoke alarm, a temperature-sensitive fire detector or an infrared sensing alarm.

According to some embodiments of the invention, a circuit board is arranged in the shell, a network interface is arranged on the shell, the network interface is in communication connection with the circuit board, and the network interface is connected with a remote controller through a network connection line.

According to some embodiments of the invention, a circuit board is arranged in the shell, a trigger part is arranged on the circuit board, and a key is arranged on the shell and is opposite to the trigger part.

According to some embodiments of the invention, the fire extinguishing core is formed with a groove, and a heating element is arranged in the groove and is contacted with the inner wall surface of the groove.

According to some embodiments of the present invention, the fire extinguishing core includes a plurality of first fire extinguishing cores and a plurality of second fire extinguishing cores, the grooves are formed on each of the first fire extinguishing cores, the plurality of heating elements on the plurality of first fire extinguishing cores form a plurality of heating element groups, each of the heating element groups includes at least one heating element, and the plurality of heating element groups are sequentially electrified to generate heat.

According to some embodiments of the invention, the number of the first fire extinguishing cores is three, and the three heating elements on the three first fire extinguishing cores are sequentially electrified to generate heat.

According to some embodiments of the invention, the recess comprises a recess bottom wall and two recess side walls, the two recess side walls being opposite to each other, the recess bottom wall being connected between the two recess side walls, the heating element being in contact with both the recess bottom wall and the two recess side walls.

According to some embodiments of the invention, the bottom of the housing is provided with a mounting bracket.

According to some embodiments of the invention, the fire extinguishing core forms a k-type aerosol after ignition.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a perspective view of a fire extinguishing apparatus according to an embodiment of the present invention;

FIG. 2 is another angular perspective view of the fire suppression apparatus shown in FIG. 1;

FIG. 3 is a perspective view of yet another angle of the fire suppression apparatus shown in FIG. 1;

FIG. 4 is a front view of the fire suppression apparatus shown in FIG. 1;

FIG. 5 is a left side view of the fire suppression apparatus shown in FIG. 1;

FIG. 6 is a right side view of the fire suppression apparatus shown in FIG. 1;

FIG. 7 is a top view of the fire suppression apparatus shown in FIG. 1;

FIG. 8 is a bottom view of the fire suppression apparatus shown in FIG. 1;

FIG. 9 is an exploded view of the fire extinguishing apparatus shown in FIG. 1, wherein keys are not shown;

FIG. 10 is a cross-sectional view of the fire suppression apparatus shown in FIG. 1;

fig. 11 is a perspective view of the body of the second housing of the fire extinguishing apparatus shown in fig. 9;

fig. 12 is a perspective view of a second cover of the second housing of the fire extinguishing apparatus shown in fig. 9;

fig. 13 is a perspective view of the first housing of the fire extinguishing apparatus shown in fig. 9;

fig. 14 is a perspective view of a first cover of the fire extinguishing apparatus shown in fig. 9;

FIG. 15 is a perspective view of the housing of the fire suppression apparatus shown in FIG. 9;

FIG. 16 is a perspective view of the mounting bracket of the fire suppression apparatus shown in FIG. 9;

FIG. 17 is a schematic illustration of a fire suppression core, heating element, and ignition wire according to an embodiment of the present invention;

FIG. 18 is a perspective view of the fire suppression core shown in FIG. 17;

FIG. 19 is a schematic view of the heating element shown in FIG. 17;

FIG. 20a is a schematic view of a divider plate of a fire suppression apparatus according to an embodiment of the present invention;

FIG. 20b is a schematic view of another angle of the divider plate shown in FIG. 20 a;

fig. 21 is a schematic view of a battery top case of a fire extinguishing apparatus according to an embodiment of the present invention;

fig. 22 is a schematic view of a battery lower case of a fire extinguishing apparatus according to an embodiment of the present invention;

FIG. 23 is a schematic view of a key of a fire extinguishing device according to an embodiment of the invention;

FIG. 24 is a schematic view of a rupture disc of a fire suppression apparatus according to an embodiment of the present invention;

fig. 25 is a schematic view of a key pad of a fire extinguishing apparatus according to an embodiment of the present invention;

FIG. 26 is a schematic illustration of the distribution of fire suppression cores within a second housing according to an embodiment of the present invention;

FIG. 27 is a schematic diagram of a circuit board and a remote control terminal according to an embodiment of the invention;

fig. 28 is a perspective view of a fire extinguishing apparatus according to another embodiment of the present invention;

FIG. 29 is a schematic view of the arrangement of the fire extinguishing core of the fire extinguishing apparatus shown in FIG. 28;

fig. 30 is a perspective view of a power supply battery according to an embodiment of the present invention;

FIG. 31 is another angular perspective view of the power supply battery shown in FIG. 30;

FIG. 32 is a further angular perspective view of the power supply battery shown in FIG. 30;

fig. 33 is a front view of the power supply battery shown in fig. 30;

FIG. 34 is a left side view of the power supply battery shown in FIG. 30;

FIG. 35 is a right side view of the power supply battery shown in FIG. 30;

FIG. 36 is a bottom view of the power supply battery shown in FIG. 30;

FIG. 37 is an assembled schematic view of a power supply battery according to an embodiment of the invention;

FIG. 38 is a partial perspective view of a fire suppression apparatus according to an embodiment of the present invention;

fig. 39 is another angular perspective view of the fire extinguishing apparatus shown in fig. 38.

Reference numerals:

100: a fire extinguishing device;

1: a housing; 11: a first accommodation chamber; 111: a first through hole;

12: a second accommodation chamber; 121: a circuit board; 122: a power supply battery;

1221: a limit protrusion; 13: a first housing; 131: a first cover;

1311: flanging; 14: a second housing; 141: a body; 1411: a third accommodation chamber;

1412: a first inner wall; 14121: a lead path; 1413: a second inner wall; 1414: a connecting wall;

1415: a second through hole; 142: a second cover; 15: a cover body; 151: a mounting hole;

16: a key; 17: a network interface; 2: a fire extinguishing core; 21: a groove; 211: a heating element;

212: an ignition wire; 213: a groove bottom wall; 214: a groove sidewall; 3: a mounting bracket;

4: a partition plate; 41: an extension plate; 411: an accommodation space; 42: an elastic part;

421: a limiting hole; 4211: an opening; 422: an elastic buckle; 4221: a buckle part;

43: a mounting port; 5: a battery case; 51: a battery upper case; 52: a battery lower case;

53: a blind hole; 6: a security pane; 7: and a key sleeve.

Detailed Description

Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.

A fire extinguishing apparatus 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 39. The fire extinguishing apparatus 100 is suitable for an indoor space in which living bodies exist. The "indoor space" refers to the interior of a building, that is, the interior space of a building, such as a residential building, an office building, a mall, a restaurant kitchen, a large, medium and small warehouse, or a room of a hotel, or a corridor, or the like. Of course, the fire extinguishing apparatus 100 may also be used in a confined space, such as a sand well, an excavation, a pump room, or a computer room.

As shown in fig. 1 to 10, a fire extinguishing apparatus 100 according to an embodiment of the present invention includes a housing 1 and at least one fire extinguishing core 2. Specifically, at least one first through hole 111 is formed in the housing 1. The fire extinguishing core 2 is arranged in the shell 1, the fire extinguishing core 2 is solid, and nontoxic fire extinguishing gas generated when the fire extinguishing core 2 burns is suitable for being sprayed to the outside of the shell 1 through the first through holes 111.

For example, the extinguishing core 2 can be an aerosol-based condensation extinguishing agent which is a special mixture of combustible components, mainly comprising three substances of potassium nitrate, dicyandiamide and organic resin, is in a solid state after being manufactured, has no compressed gas, has stable physical properties and can be stored at a temperature of between 60 ℃ below zero and 160 ℃ above zero. Once the fire extinguishing core is heated to a certain temperature range at high temperature, a large amount of fire extinguishing gas (the fire extinguishing gas is reported by toxicity test and is safe, nontoxic and harmless) is released to fill the whole indoor space, and potassium ions generated by the combustion of the fire extinguishing core 2 enter a flame chain to take away oxygen ions, hydrogen ions and hydroxyl ions, so that the flame chain is broken, the fire cannot continue to burn, but oxygen in the air cannot be consumed, and the fire extinguishing effect is realized. Wherein, the casing 1 is not the pressure vessel, and extinguishing device 100 is non-pressurized gas device, when extinguishing device 100 fires the back, fires pressureless solid fire extinguishing core 2 to fire to have the fire extinguishing gas release of pressure, reaches the effect that needs the pressure vessel to spray out, and extinguishing device 100 can be maintenance-free, need not to monitor atmospheric pressure, and need not external power source. As a result, the fire extinguishing core 2 burns to generate a nontoxic fire extinguishing gas, so that the entire fire extinguishing apparatus 100 has fire extinguishing safety, and is suitable for an indoor space where living bodies (e.g., people) exist. Moreover, because the fire extinguishing core 2 is solid, compressed gas is not needed to push, so that no pressure exists in the shell 1, and periodic maintenance is not needed. In addition, since the fire extinguishing core 2 itself contains an oxidizing agent, it is possible to dispense with consuming oxygen in the indoor space.

According to the fire extinguishing apparatus 100 of the embodiment of the present invention, the fire extinguishing core 2 is made solid, so that no pressure exists in the casing 1, and no regular maintenance is required. In addition, because the fire extinguishing core 2 generates nontoxic fire extinguishing gas when burning, the fire extinguishing gas does not damage human bodies, so that the whole fire extinguishing device 100 has fire extinguishing safety and is suitable for indoor spaces where people exist.

In some embodiments of the present invention, referring to fig. 10, 17 and 26, the fire extinguishing apparatus 100 further comprises at least two alarms (not shown) disposed adjacent to the housing 1. A circuit board 121 is arranged in the shell 1, a heating element 211 is arranged on the fire extinguishing core 2, the heating element 211 is electrically connected with the circuit board 121, and the circuit board 121 controls the heating element 211 to be electrified when at least two alarms give an alarm. For example, when two alarms are arranged on the shell 1, if the two alarms give an alarm at the same time, the two alarms are regarded as fire alarms, and a starting command is directly sent to the circuit board 121 through a special network wire, so that the intelligent automatic starting is realized, and the unattended function is realized; when only one alarm gives an alarm, the cloud APP can start a pushing function, and the monitoring video of the accident area is pushed to the mobile phone of the system administrator through the 4G or 5G signals of the operator, and two selection buttons of fire extinguishing and cancel are provided at the same time, so that the administrator decides to operate. Thus, through the above arrangement, intelligent autonomous starting of the fire extinguishing apparatus 100 is realized, and the accuracy and reliability of fire extinguishing can be improved. Wherein, each alarm can be a smoke alarm, a temperature-sensing fire detector or an infrared induction alarm, etc.

In some embodiments of the present invention, as shown in fig. 5, a circuit board 121 is disposed in the housing 1, a network interface 17 is disposed on the housing 1, the network interface 17 is communicatively connected to the circuit board 121, and the network interface 17 is connected to a remote controller through a network connection. For example, the circuit board 121 may be provided with jumper pins that are wired to an activation button (not shown) of an outdoor-specific control box through a network connection. The jumper pin has the same function as the on-site manual starting, and can realize remote starting when a starting button on the outdoor control box is pressed. Thereby, a remote activation of the fire extinguishing apparatus 100 can be achieved.

In some embodiments of the present invention, referring to fig. 10 and 23, a circuit board 121 is disposed in the housing 1, a trigger portion (not shown) is disposed on the circuit board 121, and a key 16 is disposed on the housing 1, where the key 16 is opposite to the trigger portion. For example, when a fire is generated indoors, an operator can press the key 16 on the casing 1 to make the key 16 contact with the trigger part, after the trigger part is triggered, the circuit board 121 controls the heating element 211 to be electrified, the heating element 211 ignites the fire extinguishing core 2 after heating, and thus, the fire extinguishing device 100 can be manually started on site by arranging the key 16 and the trigger part, and the fire extinguishing gas generated by the combustion of the fire extinguishing core 2 can effectively extinguish the open fire indoors.

In some embodiments of the present invention, referring to fig. 17 and 18, a groove 21 is formed on the fire extinguishing core 2, and a heating element 211 is provided in the groove 21, and the heating element 211 is in contact with an inner wall surface of the groove 21. For example, in the examples of fig. 17 to 19 and 26, the heating element 211 is provided in the groove 21 of the fire extinguishing core 2, and the inner wall surface of the groove 21 is in contact with the heating element 211. When a fire is generated in a room, the heating element 211 generates heat, and since the heating element 211 is in contact with the inner wall surface of the recess 21, when the temperature of the heating element 211 reaches the ignition point of the fire extinguishing core 2, the fire extinguishing core 2 is ignited and releases a large amount of fire extinguishing gas, thereby extinguishing an open fire. Therefore, the heating element 211 is arranged in the groove 21 on the fire extinguishing core 2, and the heating element 211 is in contact with the inner wall surface of the groove 21, so that heat of the heating element 211 can be directly and effectively transferred to the fire extinguishing core 2, and the fire extinguishing core 2 is ignited to enable the fire extinguishing core 2 to release a large amount of fire extinguishing gas, and the indoor open fire can be effectively extinguished. Moreover, the fire extinguishing device 100 arranged in this way can effectively extinguish fire when the fire-fighting spraying system is not installed indoors or is not started, can avoid small fire from developing into uncontrollable big fire, does not need to wait for the fire-fighting truck to fight fire, can avoid casualties and huge property loss, and greatly improves the safety. In addition, the heating element 211 is arranged in the groove 21, so that the occupied space of the heating element 211 can be saved, and the whole fire extinguishing device 100 is simple in structure and convenient to arrange.

In a further embodiment of the present invention, the fire extinguishing core 2 comprises a plurality of first fire extinguishing cores (as shown in fig. 17, 18 and 26) each having a groove 21 formed therein, and a plurality of second fire extinguishing cores (not shown) each having a plurality of heating elements 211 constituting a plurality of heating element groups each including at least one heating element 211, the plurality of heating element groups being sequentially energized to generate heat. In the description of the present invention, "plurality" means two or more. The plurality of second fire extinguishing cores are not provided with grooves 21, so that the second fire extinguishing cores are not provided with heating elements 211. Wherein, the first fire extinguishing core is responsible for ignition, and the second fire extinguishing core is next to the first fire extinguishing core, when the first fire extinguishing core is successfully ignited, the combustion temperature is about 1000 ℃, and all the second fire extinguishing cores around the first fire extinguishing core can be ignited in the narrow space of the first accommodating cavity 11 to form a fire continuous operation effect, and due to the space design in the shell, all the fire extinguishing cores 2 are unnecessary to be made into the first fire extinguishing core, so that the number of the heating element 211 groups and the number of the power supply batteries 122 can be greatly reduced.

For convenience of description, a group of heating element groups that are energized first will be referred to as a "first group of heating element groups". For example, when a fire is initiated indoors, the multiple heating element groups can be sequentially queued for being electrified and heated under the control of the circuit board 121, the first fire extinguishing core where the heating element 211 in the first heating element group is located can be ignited after the first heating element group heats, and the ignited first fire extinguishing core can ignite the rest first fire extinguishing cores and the rest second fire extinguishing cores, so that the effect of 'fire and fire are linked', thereby releasing fire extinguishing gas and realizing indoor fire extinguishing. The heating element groups energized after the first group of heating element groups act as redundant backups to achieve supplemental ignition in the event of failure of the first group of heating element groups to ignite. Therefore, by arranging the plurality of groups of heating element groups, the plurality of groups of heating element groups can ensure that the fire extinguishing core 2 can be ignited in time at the initial stage of fire, so that a large amount of fire extinguishing gas is released, fire extinguishing is realized, and the reliability of fire extinguishing of the fire extinguishing device 100 is greatly improved.

Alternatively, referring to fig. 26, the number of the first fire extinguishing cores may be three, and the three heating elements 211 on the three first fire extinguishing cores may be sequentially energized to generate heat. Wherein, three heating elements 211 on the three first fire extinguishing cores can be sequentially electrified to generate heat according to a program of '1 channel-2 channel-3 channel'. Thus, a "triple redundancy" guarantee can be achieved, i.e. when one or two of the three heating elements 211 fail to ignite, the other heating element 211 can ensure successful ignition. Three primary fire extinguishing cores are shown in fig. 26 for illustrative purposes, but it is obvious to the skilled person after reading the solution of the present application that the solution is applied to other numbers of primary fire extinguishing cores, which also falls within the scope of the present invention.

In some embodiments of the present invention, the recess 21 includes a recess bottom wall 213 and two recess side walls 214, the two recess side walls 214 being opposite to each other, the recess bottom wall 213 being connected between the two recess side walls 214, the heating element 211 being in contact with both the recess bottom wall 213 and the two recess side walls 214. Therefore, by making the heating element 211 contact with the groove bottom wall 213 and the two groove side walls 214, the contact area between the heating element 211 and the fire extinguishing core 2 is increased, and three-surface contact between the heating element 211 and the fire extinguishing core 2 is realized, so that the heat of the heating element 211 can be effectively transferred to the fire extinguishing core 2, and the fire extinguishing core 2 can be rapidly ignited and release a large amount of fire extinguishing gas indoors, thereby realizing rapid fire extinguishing.

Alternatively, referring to fig. 1-9 and 16, the bottom of the housing 1 is provided with a mounting bracket 3. The mounting bracket 3 may be detachably connected to the housing 1. Therefore, by arranging the mounting bracket 3, the fire extinguishing device 100 is convenient to mount, so that the fire extinguishing device 100 can be suitable for various mounting environments, for example, the fire extinguishing device can be used in a suspended ceiling, a wall or directly placed on a table.

Optionally, the fire extinguishing core 2 forms a k-type aerosol after ignition. Wherein the representative chemical component of the k-type aerosol is potassium nitrate.

The fire extinguishing apparatus 100 of the present application belongs to an aerosol fire extinguisher (aerosol extinguisher). An aerosol is a colloidal mixture of substances in a gas. Colloidal is a state in which a substance exists in a liquid or gas in a finely distributed manner, in which particles are larger than molecules and smaller than particles in suspension. In this state, the aerosol is a dry, suspended substance which in the first case appears as a chaotic white smoke. The material is still in suspension as long as there is a significant temperature difference in the space. The fire extinguishing mechanism is as follows; after triggering of the dry solid fire extinguishing agent, it is discharged as a dry aerosol. Dry aerosols are used to chemically extinguish fires by virtue of being free to combine based on a chain reaction involving a combustion process. The bound radicals prevent free electrons in the outer surface layer of the substance that can react with other substances, thereby interrupting the combustion process. Two main effects occur on the surface of the fine-sized particles present in the aerosol. The smaller the particle, the more effective the mechanism. Aerosol fire extinguishers consist of a pressureless container containing a fire extinguishing agent in solid form. The material burns after an electrical ignition or hot spot fire. The microscopically fine extinguishing powder is discharged here in the form of a mist at high speed. The mist diffuses like a gas and is a highly effective fire extinguishing agent. However, the field of application of these extinguishers has so far been limited to smaller enclosed spaces to achieve the desired concentration.

Optionally, the heating time of the heating element 211 is t, where t satisfies: t is more than or equal to 1s and less than or equal to 30s. Specifically, for example, when the time t < 1s, the heating time of the heating element 211 is too short, the temperature of the heating element 211 may not reach the ignition temperature of the fire extinguishing core 2, and thus the fire extinguishing core 2 may not be ignited, and rapid fire extinguishing at the initial stage of fire may not be possible; when time t > 30s, the ignition operation is already completed, and the heating element 211 is still heating, resulting in unnecessary heating time. Wherein t is preferably 3 s.ltoreq.t.ltoreq.8s. Thus, by making the heating time t of the heating element 211 satisfy: t is not less than 1s and not more than 30s, so that the fire extinguishing core 2 can be ignited at the initial stage of fire, and rapid fire extinguishing is realized.

Optionally, the fire extinguishing core 2 has a fire point temperature T, wherein T satisfies: t is more than or equal to 200 ℃ and less than or equal to 1000 ℃. Therefore, when the temperature T is more than or equal to 200 ℃ and less than or equal to 1000 ℃, the fire extinguishing core 2 can be rapidly ignited at the initial stage of fire, so that the fire extinguishing gas released by the fire extinguishing core 2 can be filled indoors, the indoor open fire can be effectively extinguished, the fire extinguishing accuracy can be ensured, and the false ignition of the fire extinguishing core 2 is prevented. Further alternatively, T further satisfies: t is more than or equal to 400 ℃ and less than or equal to 550 ℃.

Alternatively, the fire extinguishing core 2 can burn normally under a humidity of 95%.

In some embodiments of the present invention, as shown in fig. 17 and 19, the heating element 211 is a heating wire winding extending spirally in the axial direction. By this arrangement, the heating element 211 has a high heat condensing ability, and can form a heat vortex, so that the fire extinguishing core 2 can be rapidly ignited to extinguish a fire.

Alternatively, the heater winding may be wound clockwise or counterclockwise, and the outer diameter of the heater winding is identical to or slightly smaller than the width of the groove 21. Wherein, the number of turns of heater winding is C, and C satisfies: c is more than or equal to 1 and less than or equal to 10, and C preferably satisfies the following conditions: c is more than or equal to 3 and less than or equal to 5. The wire diameter of the heating wire winding is phi, wherein phi satisfies the following conditions: phi is more than or equal to 0.1mm and less than or equal to 2.0mm, and preferably satisfies the following conditions: phi is more than or equal to 0.2mm and less than or equal to 0.4mm. The coil spacing of the heating wire winding is S, wherein the S satisfies the following conditions: s is more than or equal to 0.5mm and less than or equal to 5.0mm, and the preferable steps of S are as follows: s is more than or equal to 1.0mm and less than or equal to 1.5mm.

In some embodiments of the present invention, referring to fig. 9, 10 and 17, a first accommodating chamber 11 and a second accommodating chamber 12 are defined in the housing 1 to be isolated from each other, the fire extinguishing core 2 is disposed in the first accommodating chamber 11, a circuit board 121 and a power supply battery 122 are disposed in the second accommodating chamber 12, the power supply battery 122 is electrically connected to the circuit board 121, and both ends of the heating element 211 are electrically connected to the circuit board 121 through ignition wires 212, respectively. For example, in the examples of fig. 9, 10 and 17, the first accommodation chamber 11 and the second accommodation chamber 12 are isolated from each other, and the wiring board 121 and the power supply battery 122 are provided in the second accommodation chamber 12. Wherein the power supply battery 122 is used for supplying power to the circuit board 121. The first accommodating cavity 11 is internally provided with a fire extinguishing core 2. Ignition wires 212 are connected to both ends of the heating element 211, and the ignition wires 212 are electrically connected to the wiring board 121. For example, when the fire extinguishing core 2 in the first housing chamber 11 burns, the temperature in the first housing chamber 11 may rise rapidly, for example, up to 1000 ℃, but since the first housing chamber 11 and the second housing chamber 12 are physically isolated from each other, the high temperature in the first housing chamber 11 does not affect the normal operation of the circuit board 121 or the power supply battery 122. Optionally, a thermal insulation pad, such as an aluminum silicate ceramic fiber thermal insulation pad, may be provided between the first receiving chamber 11 and the second receiving chamber 12 to further reduce heat transfer. Thus, by defining the first accommodation chamber 11 and the second accommodation chamber 12 isolated from each other in the housing 1, damage to the wiring board 121 and the power supply battery 122 in the second accommodation chamber 12 by high temperature can be effectively avoided. The housing 1 may be a metal housing to achieve rapid heat dissipation.

In some alternative embodiments of the present invention, in conjunction with fig. 27, the circuit board 121 is switchable between a sleep mode and an operation mode, the circuit board 121 defaults to the operation mode when it is powered on for the first time, and the circuit board 121 is switched from the operation mode to the sleep mode when the circuit board 121 does not receive a start command within a preset time. For example, when the wiring board 121 is first energized, the wiring board 121 defaults to an operational mode, when the wiring board 121 is in an awake state. When the start command is not received within a preset time, the circuit board 121 will automatically enter the sleep mode. It should be noted that, when the circuit board 121 is in the sleep mode, the electrical components are turned off, only one control unit has a low power supply or monitor, and after the circuit board 121 receives the start command, other electrical units can be awakened by the control unit. Thus, by the above arrangement, the power consumption of the wiring board 121 can be reduced, and the service life of the power supply battery 122 can be prolonged.

In some embodiments of the present invention, referring to fig. 27, a network interface 17 is provided on the housing 1, the network interface 17 is communicatively connected to the circuit board 121, and when an abnormality occurs in the circuit board 121 or the voltage of the power supply battery 122 is lower than a predetermined voltage, a remote control terminal communicatively connected to the network interface 17 outputs an alarm signal. The fire extinguishing apparatus 100 may be wired to a remote control terminal, which may be provided with a wake-up button and a self-checking button. When the ignition program is detected, the wake-up button and the self-checking button can be clicked in sequence, so that the circuit board 121 is switched to a working mode, and when the remote access monitoring detects that the program is normal, a state signal is returned to the remote control end, and if the program is abnormal, a warning signal is returned to prompt maintenance.

For example, the fire extinguishing core 2 may include a plurality of first fire extinguishing cores (as shown in fig. 17 and 18) each having a groove 21 formed thereon, and a plurality of second fire extinguishing cores (not shown) each having a circuit board 121 adapted to control the sequential energization of the plurality of heating elements 211 on the plurality of first fire extinguishing cores. For example, when the number of the first fire extinguishing cores is three, the circuit board 121 controls the three heating elements 211 on the three first fire extinguishing cores to be sequentially energized. The three heating elements 211 correspond to three channels on the circuit board 121, for example, 1 channel, 2 channels, and 3 channels, respectively. The network interface 17 is communicatively connected to the circuit board 121, and the fire extinguishing apparatus 100 is externally accessible through limited network rights, and remotely instructs execution of a simulated ignition program test function to check whether the circuit board 121 is functioning properly. Specifically, when the ignition program is detected, the ignition program on the circuit board 121 is simulated and run once, that is, after the 1-channel is electrified for a few seconds, the 2-channel is electrified for the same seconds, and finally, the 3-channel is electrified for the same seconds, so that the heating element 211 is not actually electrified and ignited. Through the above-described process, the health feedback function of the wiring board 121 can be realized.

The power supply battery 122 is located in the second accommodating cavity 12, and when the circuit board 121 is in the sleep mode, almost self-discharging of the power supply battery 122 is consumed, and a stable self-consumption curve exists. However, the long-term power consumption may also have a threshold value, and when the voltage value is lower than the ignition request, the power supply battery 122 needs to be replaced. When the circuit board 121 is designed, the ignition line 212 can be wired remotely, the voltage of the power supply battery 122 can be accessed in real time at a remote control end and can be displayed on a cloud system, when the voltage is reduced to reach an alarm value, the system can give a low-voltage alarm, and a background manager can conveniently inform a special person to go to the fire extinguishing device 100 to replace the battery.

Thus, by the above arrangement, the health feedback of the circuit board 121 and the voltage feedback of the power supply battery 122 can be realized, the fire extinguishing apparatus 100 can be ensured to normally operate, and effective fire extinguishing can be realized.

Alternatively, the heating element 211 may be a nichrome resistance wire or the like. Therefore, when the heating element 211 is a nichrome resistance wire, the nichrome resistance wire has high strength in a high-temperature environment, is not easy to deform during long-term high-temperature operation, is not easy to change the structure, has good normal-temperature plasticity, and is simple to repair after deformation. Moreover, the nichrome resistance wire has high emissivity, no magnetism, good corrosion resistance and long service life. Of course, the heating element 211 may be other materials that can generate heat by energizing, and is not limited to nichrome resistance wire.

In some embodiments of the present invention, as shown in fig. 1, 2, and 9-15, the housing 1 includes a first housing 13 and a second housing 14. Specifically, a first cover 131 is disposed on top of the first housing 13, a first accommodating chamber 11 is defined between the first housing 13 and the first cover 131, and a plurality of first through holes 111 are formed on a sidewall of the first housing 13 at intervals. The second housing 14 is disposed in the first accommodating cavity 11, a sidewall of the second housing 14 and a sidewall of the first housing 13 are spaced apart from each other, a plurality of second through holes 1415 are formed on the sidewall of the second housing 14 at intervals, and the plurality of second through holes 1415 are staggered from the plurality of first through holes 111. The fire extinguishing core 2 is disposed in the second housing 14, and at least part of the fire extinguishing gas generated by the combustion of the fire extinguishing core 2 is discharged through the second through holes 1415 and the first through holes 111 in sequence after being rebounded through the first cover 131.

For example, in the examples of fig. 1, 2, and 9 to 15, the first receiving chamber 11 is defined by the first cover 131 and the first housing 13 together, a plurality of first through holes 111 are formed on a sidewall of the first housing 13, and the plurality of first through holes 111 are disposed at intervals. The second housing 14 is accommodated in the first accommodating chamber 11, the side wall of the second housing 14 and the side wall of the first housing 13 are arranged at intervals inside and outside, a plurality of second through holes 1415 are formed on the side wall of the second housing 14, and a plurality of second through holes 1415 are arranged at intervals, and the fire extinguishing core 2 is arranged in the second housing 14. When the fire extinguishing core 2 is ignited, fire extinguishing gas released by burning the fire extinguishing core 2 is sprayed out from the plurality of second through holes 1415, and the plurality of second through holes 1415 and the plurality of first through holes 111 are staggered, so that the gas sprayed out from the second through holes 1415 flows to the plurality of first through holes 111 along the inner wall of the first shell 13, and finally is sprayed into a room from the plurality of first through holes 111, thereby realizing rapid fire extinguishing. Thus, by providing the first housing 13 and the second housing 14 with the side wall of the second housing 14 and the side wall of the first housing 13 spaced apart from each other, the high temperature generated by the combustion of the fire extinguishing core 2 in the second housing 14 is not entirely released to the first housing 13, and the temperature at the plurality of first through holes 111 can be effectively reduced (for example, the surface temperature can be reduced to 500 ℃ to 600 ℃). Further, by providing the plurality of second through holes 1415 in a staggered manner with respect to the plurality of first through holes 111, the injection path of the fire extinguishing gas can be extended, and flame residues generated by the combustion of the fire extinguishing core 2 can be prevented from being injected into the room together with the fire extinguishing gas, so that the flame residues can be retained in the first housing chamber 11.

In some alternative embodiments of the present invention, as shown in fig. 9 to 11 and 13, a plurality of first through holes 111 are formed at an upper portion of the first housing 13 to be spaced apart from each other in the circumferential direction, and a plurality of second through holes 1415 are formed at a lower portion of the second housing 14 to be spaced apart from each other in the circumferential direction. For example, in the examples of fig. 9 to 11 and 13, a plurality of first through holes 111 are formed in an upper portion of the first housing 13, and the plurality of first through holes 111 are disposed at uniform intervals in a circumferential direction of the first housing 13. A plurality of second through holes 1415 are formed at a lower portion of the second housing 14, and the plurality of second through holes 1415 are uniformly spaced apart in a circumferential direction of the second housing 14. Therefore, through the arrangement, the fire extinguishing gas can be uniformly sprayed indoors from the first through holes 111 which are arranged at intervals in the circumferential direction, so that the fire extinguishing gas can be dispersed by 360 degrees and rapidly fills the whole indoor space, and rapid fire extinguishing is realized.

Optionally, in conjunction with fig. 1-6, 9, 10 and 14, the edge of the first cover 131 is provided with a downwardly extending flange 1311. Therefore, the edge of the first cover body 131 is provided with the flange 1311 extending downwards, so that the fire extinguishing gas can be sprayed to the flange 1311 after being sprayed out of the first through hole 111, the fire extinguishing gas can change the spraying path and be sprayed downwards, people are prevented from being directly sprayed when the fire extinguishing device 100 is started on site, the safety of the fire extinguishing device 100 is improved, the fire extinguishing gas can be ensured to cover the whole indoor space, and quick fire extinguishing is realized.

Further, referring to fig. 1 to 6, 9, 10 and 14, the flange 1311 extends obliquely from top to bottom toward a direction away from the center axis of the first housing 13. So set up, make have great space between turn-ups 1311 and the first casing 13, can follow turn-ups 1311 and spout to indoor well after the fire extinguishing gas spouts turn-ups 1311, improved the spraying efficiency of fire extinguishing gas, guaranteed the fire extinguishing effect.

In a further embodiment of the present invention, referring to fig. 1, 2, 9-15 and 17, the fire extinguishing apparatus 100 further comprises a housing 15. Specifically, the cover 15 is disposed on a side of the first cover 131 away from the first housing 13, a second accommodating cavity 12 is defined between the cover 15 and the first cover 131, a circuit board 121 and a power supply battery 122 are disposed in the second accommodating cavity 12, and the power supply battery 122 is electrically connected with the circuit board 121. The fire extinguishing core 2 is provided with a heating element 211, and both ends of the heating element 211 are respectively electrically connected with the circuit board 121 through ignition wires 212. For example, in the examples of fig. 9, 10 and 17, the first accommodation chamber 11 and the second accommodation chamber 12 are isolated from each other, and the wiring board 121 and the power supply battery 122 are provided in the second accommodation chamber 12. Wherein the power supply battery 122 is used for supplying power to the circuit board 121. The first accommodating cavity 11 is internally provided with a fire extinguishing core 2. Ignition wires 212 are connected to both ends of the heating element 211, and the ignition wires 212 are electrically connected to the wiring board 121. For example, when the fire extinguishing core 2 in the first housing chamber 11 burns, the temperature in the first housing chamber 11 may rise rapidly, for example, up to 1000 ℃, but since the first housing chamber 11 and the second housing chamber 12 are isolated from each other, the high temperature in the first housing chamber 11 does not affect the normal operation of the circuit board 121 or the power supply battery 122. Therefore, by providing the cover body 15 and defining the second accommodating cavity 12 between the cover body 15 and the first cover body 131, damage to the circuit board 121 and the power supply battery 122 in the second accommodating cavity 12 due to high temperature can be effectively avoided.

Alternatively, referring to fig. 9, 20a and 20b, a partition plate 4 is provided in the second accommodation chamber 12, the partition plate 4 is disposed at an upper and lower interval from the first cover 131, and a circuit board 121 and a power supply battery 122 are disposed above the partition plate 4. Thus, by providing the partition plate 4, the partition plate 4 can protect the circuit board 121 and the power supply battery 122 in the second accommodating chamber 12, and the influence of the high temperature in the second housing 14 on the circuit board 121 and the power supply battery 122 in the second accommodating chamber 12 is effectively prevented.

In some embodiments of the present invention, as shown in fig. 20a and 20b, the partition plate 4 is provided with two extension plates 41 disposed at intervals, each extension plate 41 extends in a direction away from the partition plate 4, and an accommodating space 411 is defined between the two extension plates 41 and the partition plate 4, and the power supply battery 122 is accommodated in the accommodating space 411. So configured, the power supply battery 122 may be defined between the two extension plates 41 and the separation plate 4, defining the movement of the power supply battery 122, making the structure of the entire fire extinguishing apparatus 100 more stable.

In a further embodiment of the present invention, referring to fig. 30 to 39, the partition plate 4 has an elastic portion 42, the elastic portion 42 is located between the two extension plates 41, a limiting hole 421 is provided on the elastic portion 42, one end of the limiting hole 421 has an opening 4211 communicating with the outer periphery of the partition plate 4, the size of the opening 4211 is smaller than that of the limiting hole 421, a limiting protrusion 1221 is provided at the bottom of the power supply battery 122, and the limiting protrusion 1221 is fitted into the limiting hole 421 through the opening 4211 to limit the movement of the power supply battery 122. Therefore, by making the size of the opening 4211 smaller than the size of the limiting hole 421 and the limiting protrusion 1221 being fitted in the limiting hole 421, a good limiting effect can be achieved, preventing the power supply battery 122 from being accidentally taken away.

The term "size" may refer to a width, a diameter, etc., and the meaning of the size may be determined according to the shape of the opening 4211 and the limiting hole 421, and is not limited herein.

In some embodiments of the present invention, referring to fig. 20b and 37, the partition plate 4 is formed with a mounting hole 43 penetrating through the outer circumference of the partition plate 4, the elastic portion 42 is connected to the bottom wall of the mounting hole 43 and spaced apart from both sidewalls of the mounting hole 43, the elastic portion 42 has two elastic buttons 422 extending toward the outer circumference of the partition plate 4, the two elastic buttons 422 are spaced apart from each other to define a limiting hole 421, and free ends of the two elastic portions 42 have button portions 4221 opposite to each other to define an opening 4211.

For example, in the examples of fig. 20b and 37, the free end of each elastic portion 42 has a slope to serve as a guide. When mounted, the power supply battery 122 is slid into the accommodation space 411 in the longitudinal direction of the extension plate 41. When the limit protrusions 1221 at the bottom of the power supply battery 122 reach the fastening portions 4221 through the inclined surfaces of the free ends of the elastic portions 42, the fastening portions 4221 at the free ends of the two elastic portions 42 move in directions away from each other under the action of the limit protrusions 1221 because the size of the opening 4211 is smaller than the size of the limit protrusions 1221. When the limiting boss 1221 completely enters the limiting hole 421, the buckling portions 4221 at the free ends of the two elastic portions 42 are restored to the original state, and the power supply battery 122 is enclosed and blocked, and cannot be freely taken out. Thus, by the above arrangement, the power supply battery 122 can be well protected, so that the power supply battery 122 cannot be easily taken out. In addition, the device is simple in structure, fewer in parts and convenient to install, and complicated screw fastening can be avoided.

Alternatively, referring to fig. 30 to 39, the power supply battery 122 has a battery case 5, and the bottom of the battery case 5 is formed with a blind hole 53 recessed toward a direction away from the partition plate 4, the blind hole 53 being located at the opening 4211. For example, in the example of fig. 30-39, the blind hole 53 is a circular hole, and when the power supply battery 122 is installed, the surface arc of the battery case 5 is completely matched with the surface arc of the cover 15, and the handle is not pulled, so that the space between the cover 15 and the first cover 131 cannot accommodate fingers, and therefore the power supply battery 122 cannot be removed by hand. When the power supply battery 122 needs to be replaced or overhauled, as the blind hole 53 can be exposed from the opening 4211, a special tool with 90-degree bending can be used to insert the blind hole 53 at the bottom of the battery case 5 from the interlayer so as to draw the power supply battery 122 out. Thus, a good anti-disassembly function can be performed, preventing the power supply battery 122 from being easily disassembled.

Alternatively, referring to fig. 21 and 22, the battery case 5 may include a battery upper case 51 and a battery lower case 52, and the battery upper case 51 and the battery lower case 52 may be connected by a snap-fit structure.

In some embodiments of the present invention, referring to fig. 9 to 12, the second housing 14 includes a body 141 and a second cover 142. The top of the body 141 is open, the side wall of the body 141 and the side wall of the first housing 13 are spaced apart from each other, a plurality of second through holes 1415 are formed on the side wall of the body 141 at intervals, a third accommodating cavity 1411 is defined in the body 141, and a fire extinguishing core 2 is arranged in the third accommodating cavity 1411. The second cover 142 is disposed at the top of the body 141, and a portion of the second cover 142 corresponding to the third receiving cavity 1411 is disposed at an upper and lower interval from the first cover 131. For example, in the example of fig. 9 to 12, a plurality of second through holes 1415 are formed on a sidewall of the body 141, a second cover 142 is provided at the top of the body 141, and the fire extinguishing core 2 is provided in the third receiving chamber 1411. Alternatively, the top edge of the body 141 may extend horizontally outward, and the edge of the second cover 142 may be opposite to the edge of the body 141, and the edge of the second cover 142 may be fastened to the edge of the body 141 by a screw fastener. The middle part of the second cover 142 is opposite to the third receiving chamber 1411, and the middle part of the second cover 142 is disposed at an up-down interval from the first cover 131. Thus, by disposing the portion of the second cover 142 corresponding to the third accommodation chamber 1411 at an up-down interval from the first cover 131, the second accommodation chamber 12 and the third accommodation chamber 1411 can be effectively isolated, and the circuit board 121 and the power supply battery 122 in the second accommodation chamber 12 can be further prevented from being damaged by the high temperature in the third accommodation chamber 1411.

Optionally, a heat insulation pad, such as an aluminum silicate ceramic fiber heat insulation pad, may be disposed between the second cover 142 and the first cover 131 to further reduce heat transfer, and effectively prevent the high temperature in the third receiving chamber 1411 from affecting the circuit board 121 and the power supply battery 122.

Further, referring to fig. 10 and 11, the body 141 includes a first inner wall 1412, a second inner wall 1413, and a connection wall 1414. Specifically, the first inner wall 1412 is formed in an annular structure, the first inner wall 1412 defines a hollow lead passage 14121 therein, and the first inner wall 1412 is provided in the first accommodating chamber 11. The second inner wall 1413 surrounds the outer peripheral side of the first inner wall 1412. The connection wall 1414 is connected between the bottom of the first inner wall 1412 and the bottom of the second inner wall 1413, and the connection wall 1414, the first inner wall 1412 and the second inner wall 1413 together define a third receiving chamber 1411, through which the ignition wire 212 passes through the second through hole 1415 and the lead path 14121 to be electrically connected to the wiring board 121. Therefore, by providing the first inner wall 1412, the second inner wall 1413 and the connecting wall 1414, and defining the hollow lead passage 14121 in the first inner wall 1412, the routing path of the ignition wire 212 is shortened, and the length of the ignition wire 212 can be smaller, so that the material consumption of the ignition wire 212 can be reduced, and the cost can be reduced. Moreover, by the arrangement, no extra wiring space is required, so that the whole fire extinguishing device 100 is more reasonable and compact in structure.

Alternatively, as shown in fig. 10, the bottom wall of the second housing 14 is provided at an up-down interval from the bottom wall of the first housing 13. So set up, can be used for holding the flame residue that fire-extinguishing core 2 burns and produce between the diapire of second casing 14 and the diapire of first casing 13, prevent that the flame residue that fire-extinguishing core 2 burns from influencing the injection of fire extinguishing gas.

In some alternative embodiments of the present invention, referring to fig. 26, the plurality of fire extinguishing cores 2 are plural, and the plurality of fire extinguishing cores 2 constitute a plurality of fire extinguishing core groups, each of which includes the plurality of fire extinguishing cores 2 disposed circumferentially, arranged in the radial direction of the second housing 14. For example, in the example of fig. 26, two sets of fire extinguishing core groups are shown, the plurality of fire extinguishing cores 2 in each set being arranged in the circumferential direction of the second housing 14, each fire extinguishing core 2 being generally cylindrical. Wherein the fire extinguishing gas generated by the combustion of each fire extinguishing core 2 can extinguish the fire in a space of 3.3 cubic meters. Thus, through the above arrangement, the arrangement of the fire extinguishing core 2 is reasonable, so that the fire extinguishing gas can be uniformly sprayed out from the plurality of first through holes 111, thereby realizing rapid fire extinguishing.

Of course, the present invention is not limited thereto, and in other alternative embodiments of the present invention, in combination with fig. 28 and 29, a plurality of fire extinguishing core groups are arranged in parallel, and the plurality of fire extinguishing core groups are closely arranged, and two adjacent fire extinguishing cores 2 in two adjacent fire extinguishing core groups are arranged in a staggered manner, and a plurality of fire extinguishing cores 2 in each fire extinguishing core group are closely arranged without interval. By this arrangement, a larger number of fire extinguishing cores 2 can be accommodated in the second housing, so that fire extinguishing in a larger space can be realized.

It should be noted that the arrangement of the fire extinguishing core may be various, such as various linear arrays, and is not limited to the above two.

Optionally, in combination with fig. 24, the fire extinguishing device 100 further comprises a rupture disc 6, the rupture disc 6 being located between the key 16 and the cover 15. Therefore, when the room is not on fire, the safety piece 6 can clamp the key 16, so that the key 16 is not contacted with the triggering part, and false triggering is prevented; when a fire occurs in a room, the safety sheet 6 can be pulled out, and the key 16 is pressed to contact the key 16 with the triggering part of the circuit board 121, so that the circuit board 121 controls the heating element 211 to be electrified and heated.

Optionally, referring to fig. 9 and 25, the fire extinguishing apparatus 100 further includes a key cover 7, and the key cover 7 is fixed to the cover 15 and connected to the keys 16. For example, referring to fig. 9 and 25, the top of the cover 15 may be formed with a mounting hole 151, the key pad 7 is provided at the mounting hole 151, and the key 16 is provided on the key pad 7.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the description of the invention, a "first feature" or "second feature" may include one or more of such features.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fire extinguishing apparatus, the fire extinguishing apparatus being adapted to an indoor space in which a living being exists, the fire extinguishing apparatus comprising:

a housing, on which at least one first through hole is formed;

at least one fire extinguishing core, wherein the fire extinguishing core is arranged in the shell, the fire extinguishing core is solid, and nontoxic fire extinguishing gas generated when the fire extinguishing core burns is suitable for being sprayed to the outside of the shell through the first through hole;

The fire extinguishing core is of a cylindrical structure; the heating element is a heating wire winding which extends along the axial spiral;

a groove is formed on the fire extinguishing core, a heating element is arranged in the groove, and the heating element is contacted with the inner wall surface of the groove; the groove comprises a groove bottom wall and two groove side walls, the two groove side walls are opposite to each other, the groove bottom wall is connected between the two groove side walls, and the heating element is contacted with the groove bottom wall and the two groove side walls;

the fire extinguishing cores comprise a plurality of first fire extinguishing cores and a plurality of second fire extinguishing cores, the grooves are formed in each first fire extinguishing core, a plurality of heating elements on the first fire extinguishing cores form a plurality of heating element groups, each heating element group comprises at least one heating element, and the plurality of heating element groups are sequentially electrified to generate heat;

grooves are not formed in the plurality of second fire extinguishing cores, so that heating elements are not arranged on the second fire extinguishing cores; wherein the first extinguishing core is responsible for ignition and the second extinguishing core is immediately beside it.

2. The fire suppression apparatus according to claim 1, further comprising:

at least two alarms, at least two of the alarms being disposed adjacent the housing,

The fire extinguishing core is characterized in that a circuit board is arranged in the shell, a heating element is arranged on the fire extinguishing core and is electrically connected with the circuit board, and the circuit board controls the heating element to be electrified when at least two alarms give an alarm.

3. A fire extinguishing apparatus according to claim 2, wherein each of the alarms is a smoke alarm, a temperature-sensitive fire detector or an infrared sensing alarm.

4. The fire extinguishing apparatus according to claim 1, wherein a circuit board is provided in the housing, a network interface is provided on the housing, the network interface is in communication connection with the circuit board, and the network interface is connected with a remote controller through a network connection.

5. The fire extinguishing apparatus according to claim 1, wherein a circuit board is provided in the housing, a trigger portion is provided on the circuit board, and a key is provided on the housing, the key being opposite to the trigger portion.

6. The fire extinguishing apparatus according to claim 1, wherein the number of the first fire extinguishing cores is three, and three of the heating elements on the three first fire extinguishing cores are sequentially energized to generate heat.

7. Fire extinguishing apparatus according to any one of claims 1 to 6, wherein the bottom of the housing is provided with a mounting bracket.

8. A fire extinguishing device according to any one of claims 1-6, wherein the fire extinguishing core forms a k-type aerosol after ignition.