CN217430711U

CN217430711U - Thermosensitive wire-initiated aerosol fire extinguisher

Info

Publication number: CN217430711U
Application number: CN202220996990.9U
Authority: CN
Inventors: 李双庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-09-16
Anticipated expiration: 2032-04-24

Abstract

The utility model relates to a thermosensitive wire-triggered aerosol fire extinguisher, which comprises a shell, an inner cylinder, a thermosensitive wire and an edge cover, wherein the shell comprises a bottom wall and a side wall extending from the bottom wall, the bottom wall is provided with a first spray hole, and the side wall is provided with a second spray hole and a first line passing hole; the inner cylinder is provided with an exhaust port, a fire extinguishing agent is arranged in the inner cylinder, the inner cylinder is arranged in the shell, the outer side of the side wall is provided with a wire groove, and the wire groove is spirally arranged with a plurality of circles along the circumferential direction of the side wall; one end of the thermosensitive wire is inserted into the fire extinguishing agent in the inner barrel, and the other end of the thermosensitive wire sequentially passes through the second wire passing hole and the first wire passing hole to penetrate out of the shell and is spirally wound into a plurality of circles along the wire groove. The contact area between the thermosensitive wire and the surrounding environment can be increased, the fire extinguisher can be guaranteed to be started in time as far as possible when a fire disaster occurs, and potential safety hazards are reduced.

Description

Thermosensitive wire-initiated aerosol fire extinguisher

Technical Field

The utility model relates to a fire extinguisher technical field especially relates to a heat sensitive wire causes formula aerosol fire extinguisher.

Background

The starting wire of the aerosol fire extinguisher can be an electric initiating wire and also can be a thermosensitive wire, and when the starting wire is the electric initiating wire, the starting wire needs to be matched with devices such as a sensor for monitoring and the like so as to start the electric initiating wire. In the case of a heat-sensitive wire, the heat-sensitive wire can be directly ignited when the ambient temperature reaches a certain level, and therefore, many aerosol fire extinguishers employ a heat-sensitive wire as a starting wire. In the existing aerosol fire extinguisher, one end of a heat-sensitive wire is inserted into a fire extinguishing agent, and the other end of the heat-sensitive wire extends out of a shell of the aerosol fire extinguisher.

However, the existing aerosol fire extinguisher has the disadvantages that the sensing of the heat-sensitive wire extending out of the aerosol fire extinguisher to the ambient temperature is not sensitive enough, so that the fire extinguisher cannot be started in time, and the potential safety hazard is increased; and the heat-sensitive wire is exposed outside the shell, so that the heat-sensitive wire is easy to be pulled in the installation and taking processes, the failure of the aerosol fire extinguisher can be caused in serious conditions, and the potential safety hazard is increased.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a heat-sensitive wire initiation formula aerosol fire extinguisher can increase the area of contact of heat-sensitive wire and surrounding environment, guarantees the fire extinguisher as far as possible and in time starts when the conflagration takes place, reduces the potential safety hazard.

The utility model discloses the technical scheme who adopts:

a thermosensitive wire-triggered aerosol fire extinguisher comprises a shell, an inner barrel, a thermosensitive wire and a side cover, wherein the shell comprises a bottom wall and a side wall extending from the bottom wall, a first spray hole is formed in the bottom wall, and a second spray hole and a first wire passing hole are formed in the side wall; the inner cylinder is provided with an exhaust port and a second line passing hole, a fire extinguishing agent is arranged in the inner cylinder, the inner cylinder is arranged in the shell and is far away from the bottom wall compared with the second spray hole, and the exhaust port faces the bottom wall; the side cover covers the port of the side wall far away from the bottom wall and abuts against one end of the inner cylinder far away from the exhaust port;

a wire groove is arranged on the outer side of the side wall, and a plurality of turns of wire groove are spirally arranged along the circumferential direction of the side wall;

one end of the thermosensitive wire is inserted into the fire extinguishing agent in the inner barrel, and the other end of the thermosensitive wire sequentially passes through the second wire passing hole and the first wire passing hole to penetrate out of the shell and is spirally wound into a plurality of circles along the wire groove.

Preferably, one end of the wire casing extends to the first wire passing hole.

Preferably, the wire casing is located in the middle area of the side wall along the axial direction of the side wall, and one end of the wire casing, which is close to the port, extends to the first wire passing hole.

Preferably, the side wall sequentially comprises a first end part area, a middle part area and a second end part area along the axial direction of the side wall, and partial circumferential side walls of the first end part area and the second end part area are protruded radially compared with the middle part area to form the mounting boss;

and the two ends of the wire groove are positioned in the protruding area of the mounting boss in the circumferential direction of the side wall.

Preferably, the two mounting bosses have mounting planes that are coplanar with each other.

Preferably, the aerosol fire extinguisher further comprises an adhesive glue, wherein the adhesive glue is adhered to the mounting plane.

Preferably, the first end region comprises two symmetrical side regions, both of which are located outside the mounting plane and are symmetrical about a plane perpendicular to the mounting plane and passing through the sidewall centerline; and a plurality of rows and a plurality of columns of second spray holes are respectively arranged in each side area.

Preferably, an annular groove is formed in the side wall near the port, and the annular groove is spaced from the port;

the side cover comprises a cover body, the side wall of the cover body is provided with a cylindrical part and an annular bulge along the thickness direction of the cover body, and the annular bulge protrudes outwards than the cylindrical part in the radial direction; the annular protrusion is clamped with the annular groove, and the cylindrical part is matched with the port.

Preferably, the side cover further comprises a plurality of support ribs protruding from one side of the cover body, and the support ribs radially extend along the cover body and are radially distributed; and one end of the inner cylinder, which is far away from the exhaust port, is abutted against the support rib.

Preferably, the aerosol fire extinguisher further comprises a sensor for detecting temperature, the body of the sensor is arranged between the inner barrel and the side cover, a part of support ribs are provided with notches which avoid the body of the sensor, and the leading-out wire of the sensor passes through the first wire passing hole and penetrates out of the shell.

The utility model has the advantages that:

the utility model discloses a temperature sensing line initiation formula aerosol fire extinguisher sets up the wire casing of spiral arrangement on the lateral wall of shell to make the temperature sensing line regularly twine on the lateral wall along the wire casing and be the heliciform multiturn, so, increased the length of the temperature sensing line that exposes outside the shell, and to the position scope of ambient temperature perception, can start the aerosol fire extinguisher as soon as possible when taking place the conflagration, reduce the potential safety hazard; and the heat-sensitive wire is regularly arranged, so that the heat-sensitive wire is basically not pulled in the installation and taking processes even if the heat-sensitive wire is long, and the risk of failure of the fire extinguisher caused by the fact that the heat-sensitive wire is pulled is avoided.

Drawings

In the drawings:

FIG. 1 is a schematic view of a preferred embodiment of a heat-sensitive wire-triggered aerosol fire extinguisher according to the present invention;

FIG. 2 is an exploded view of a preferred embodiment of an aerosol fire extinguisher;

FIG. 3 is a cross-sectional view of an aerosol fire extinguisher;

FIG. 4 is a schematic view of another perspective of an aerosol fire extinguisher;

FIG. 5 is a schematic view of the location of the port of the aerosol fire extinguisher with the side cover removed;

FIG. 6 is a schematic view of the construction of the side cover;

fig. 7 is an enlarged view of a portion a in fig. 3.

In the figure: 1. a housing; 2. an inner barrel; 3. a side cover; 4. a heat-sensitive wire; 5. a sensor; 6. an auxiliary chamber;

10. an annular groove; 11. a side wall; 12. a bottom wall; 13. a first nozzle hole; 14. a second nozzle hole; 15. a wire slot; 16. a stop block; 17. a first wire passing hole; 18. a first mounting boss; 19. a second mounting boss; 20. a mounting plane;

21. an exhaust port; 22. a bump;

31. a cover body; 32. a cylindrical portion; 33. supporting ribs; 34. a notch; 35. an annular projection; 36. a limiting groove;

51. a body of the sensor; 52. leads of the sensor.

Detailed Description

The present invention will be described below based on examples, but the present invention is not limited to only these examples. In the following detailed description of the present invention, certain specific details are set forth, such that well-known methods, procedures, flows, and components have not been described in detail so as not to obscure the present invention.

Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".

In the description of the present invention, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

Referring to fig. 1-7, the utility model relates to a heat-sensitive wire-triggered aerosol fire extinguisher, which comprises a shell 1, an inner cylinder 2, a heat-sensitive wire 4 and a side cover 3, wherein the shell 1 comprises a bottom wall 12 and a side wall 11 extending from the bottom wall 12, the bottom wall 12 is provided with a first spray hole 13, and the side wall 11 is provided with a second spray hole 14 and a first wire passing hole 17; the inner cylinder 2 is provided with an exhaust port 21 and a second wire passing hole, a fire extinguishing agent is arranged in the inner cylinder 2, the inner cylinder 2 is arranged in the shell 1 and is far away from the bottom wall 12 compared with the second spray hole 14, and the exhaust port 21 faces the bottom wall 12; the edge cover 3 covers the end of the side wall 11 remote from the bottom wall 12 and abuts against the end of the inner barrel 2 remote from the exhaust port 21.

The outside of the side wall 11 is provided with a wire casing 15, and the wire casing 15 is spirally arranged with a plurality of turns along the circumference of the side wall 11.

One end of the heat-sensitive wire 4 is inserted into the fire extinguishing agent in the inner barrel 2, and the other end of the heat-sensitive wire passes through the second wire passing hole (not shown in the figure) and the first wire passing hole 17 in sequence to penetrate out of the shell 1 and is spirally wound for a plurality of turns along the wire slot 15.

The outer shell 1 is cylindrical as a whole, the outer shell 1 is provided with a port, namely, one end of the outer shell is open, the other end of the outer shell is closed, the port is opposite to the bottom wall 12 in the axial direction of the outer shell 1, the inner cylinder 2 is installed in the outer shell 1 from the port, and then the port is covered by the side cover 3 to form the aerosol fire extinguisher.

An exhaust port 21 is arranged at one end (hereinafter referred to as an "exhaust port end" for convenience of description) of the inner cylinder 2 facing the bottom wall 12, a fire extinguishing agent is arranged in the inner cylinder 2, a certain distance is reserved between the exhaust port end and the bottom wall 12, so that an auxiliary cavity 6 is formed between the exhaust port end and the bottom wall 12, a first spray hole 13 is arranged on the bottom wall 12, the first spray hole 13 axially penetrates through the bottom wall 12, a second spray hole 14 is arranged on a part of the side wall 11 corresponding to the auxiliary cavity 6, and the second spray hole 14 radially penetrates through the side wall 11. After the fire extinguishing agent is ignited, aerosol is sprayed out of the air outlet 21, enters the auxiliary cavity 6 and is sprayed out of the first spray hole 13 and the second spray hole 14.

Furthermore, the auxiliary chamber 6 can be formed by forming a stop block 16 extending inwardly inside the outer shell 1, the position of the air outlet end of the inner cartridge 2 being limited by the stop block 16, so that the auxiliary chamber 6 is formed between the air outlet end of the inner cartridge 2 and the bottom wall 12.

The side wall 11 is provided with a first wire passing hole 17, the inner barrel 2 is provided with a second wire passing hole (not shown in the figure), one end of the thermosensitive wire 4 is inserted into the fire extinguishing agent in the inner barrel 2, the other end of the thermosensitive wire passes through the second wire passing hole firstly and then passes through the first wire passing hole 17 to penetrate out of the shell 1, when a fire occurs in the outside, the thermosensitive wire 4 is ignited, and the fire extinguishing agent in the inner barrel 2 is ignited through the thermosensitive wire 4.

Preferably, in the axial direction, the first line passing hole 17 is formed in the partial side wall 11 corresponding to the inner cylinder 2, the second line passing hole is formed in one end, close to the port, of the inner cylinder 2, the fire extinguishing agent is arranged in the silica gel shell, one side, facing the exhaust port end, of the silica gel shell is opened, one end of the thermosensitive line 4 is inserted into the fire extinguishing agent from the opening, the thermosensitive line 4 is arranged along the space between the silica gel shell and the side wall 11 of the inner cylinder 2, extends to the second line passing hole, penetrates out of the second line passing hole, and then penetrates out of the shell 1 from the first line passing hole 17.

According to the aerosol fire extinguisher, the aerosol fire extinguisher spirally wound on the shell 1 can be directly placed or installed in an installation space, when a fire disaster happens, the sensitivity of sensing different positions in the space can be increased by the spirally wound thermosensitive wire 4, the timeliness of igniting the thermosensitive wire 4 is improved, and potential safety hazards are reduced; the aerosol fire extinguisher can be directly thrown to flame when a fire occurs, and the length of the aerosol fire extinguisher is larger no matter the thermosensitive wire 4 is still wound on the shell 1 or is separated from the wire slot 15 of the shell 1, so that the contact area with a fire source can be increased, and the timeliness of the ignition of the thermosensitive wire 4 is improved; in some usage scenarios, after the aerosol fire extinguisher is installed in an installation space, the heat-sensitive wires 4 can be separated from the wire slots 15 and distributed in the installation space according to a preset track, so as to increase the sensitivity of the fire extinguisher by increasing the coverage space of the heat-sensitive wires 4.

The outside of the side wall 11 is provided with a wire slot 15, the wire slot 15 is spirally arranged around the circumference of the side wall 11, and the part of the thermosensitive wire 4 which penetrates out of the shell 1 is wound outside the side part along the wire slot 15. Therefore, the heat-sensitive wire 4 penetrating out of the shell 1 is also spirally wound on the outer side of the side wall 11, and after the aerosol fire extinguisher is installed in the installation space, the heat-sensitive wire 4 is regularly arranged, so that the situation that the heat-sensitive wire is pulled in the installation and taking processes is basically avoided even if the heat-sensitive wire 4 is long, the risk that the fire extinguisher is out of work due to the fact that the heat-sensitive wire is pulled is further avoided, and the fire extinguishing efficiency of the aerosol fire extinguisher is ensured.

Preferably, the length of the part of the heat-sensitive wire 4 that passes out of the housing 1 is approximately the same as the length of the wire slot 15, or slightly shorter than the length of the wire slot 15, so that the part of the heat-sensitive wire 4 that passes out of the housing 1 can be completely in the wire slot 15.

The wire slot 15 may be two, three, four or more turns.

Preferably, one end of the wire casing 15 extends to the first wire passing hole 17, i.e., one end of the wire casing 15 is from the first wire passing hole 17, and the end is penetrated to the first wire passing hole 17.

The thermosensitive wire 4 passes through the housing 1 from the first wire passing hole 17, and since one end of the wire groove 15 just extends to the first wire passing hole 17, the part of the thermosensitive wire 4 passing through the housing 1 is entirely in the wire groove 15.

Preferably, the wire casing 15 is located in the middle region of the side wall 11 along the axial direction thereof, and one end of the wire casing 15 near the port extends to the first wire passing hole 17.

The wire casing 15 is located in the middle area, so that part of the thermosensitive wires 4 penetrating through the shell 1 are spirally wound in the middle area, one end of the wire casing 15 close to the port extends to the first wire passing hole 17, the first wire passing hole 17 is close to the port, and the first wire passing hole 17 is close to the second wire passing hole due to the fact that the second wire passing hole is also close to the port, so that the length of the thermosensitive wires 4 located in the shell 1 is reduced as much as possible, the length of the part of the thermosensitive wires 4 penetrating through the shell 1 (namely the length of the thermosensitive wires 4 exposed outside the shell 1) is relatively increased, the sensing range of the thermosensitive wires 4 on the ambient temperature is enlarged, and the fire extinguishing agent can be ignited by the thermosensitive wires 4 as soon as possible when a fire occurs.

Preferably, referring to fig. 1 and 4, the sidewall 11 includes a first end region, a middle region and a second end region in sequence along the axial direction thereof, and a part of the circumferential sidewall 11 of the first end region and the second end region protrudes radially more than the middle region to form a mounting boss.

Both ends of the wire groove 15 are located on regions where the mounting bosses protrude in the circumferential direction of the side wall 11. That is, the axial projection of the two ends of the wire slot 15 is located within the range of the axial projection of the mounting boss.

In the direction shown in fig. 4, taking the first end region on the left and the second end region on the right as an example, the axial direction of the sidewall 11 is the left-right direction, the first end region protrudes downward to form a first mounting boss 18, the second end region protrudes downward to form a second mounting boss 19, and the aerosol fire extinguisher can be mounted in the mounting space through the two mounting bosses.

After the aerosol fire extinguisher is installed in the installation space, the installation boss is connected with the installation wall of the installation space, and two ends of the wire slot 15 are located in the protruding area of the installation boss, so that two ends of the wire slot 15 are opposite to the installation wall, people can not directly observe two ends of the wire slot 15, and the other end of the thermosensitive wire 4 and the root of the thermosensitive wire 4 (the thermosensitive wire 4 is located at the first wire passing hole 17) can not be seen, and the attractiveness of the aerosol fire extinguisher is enhanced. And the root of the thermosensitive wire 4 and the position of the first wire passing hole 17 are obviously bent, when the thermosensitive wire 4 is pulled, the pulling force can be effectively blocked by the bending at the first wire passing hole 17, the thermosensitive wire 4 is prevented from being pulled to be separated from the fire extinguishing agent, and the failure of the aerosol fire extinguisher is prevented.

The ratio of the axial length of the central region to the axial overall length of the side wall 11 is 0.5-0.6, such that the axial length of the central region is greater than or equal to the sum of the axial lengths of the first and second end regions, thus providing a central region sufficiently long for the thermal wire 4 to be helically wound around, further increasing the space for sensing the thermal wire and the location of the environment.

Preferably, referring to fig. 4, the two mounting bosses have mounting planes 20 coplanar with each other, and further preferably, the coplanar mounting planes 20 may be parallel to the axial direction of the sidewall 11.

The mounting plane 20 of the first mounting boss 18 and the mounting plane 20 of the second mounting boss 19 are coplanar and face downward, and these two mounting planes 20 abut the mounting wall when the aerosol fire extinguisher is attached to the mounting wall.

Two independent installation planes 20 are formed, so that when the aerosol fire extinguisher is installed on the installation wall of the installation space, the stability of the aerosol fire extinguisher can be enhanced, the aerosol fire extinguisher is ensured to be unchanged relative to the installation space when the aerosol fire extinguisher sprays out aerosol, and the fire extinguishing effect of the aerosol fire extinguisher is ensured.

Preferably, the aerosol fire extinguisher further comprises an adhesive glue, which is adhered to the mounting plane 20.

The aerosol fire extinguisher is glued to the mounting wall by means of an adhesive. But also can be fixed with the installation wall by means of bolt connection or clamping connection.

Preferably, the first end zone comprises two symmetrical lateral zones, located outside the mounting plane 20 and symmetrical with respect to a plane perpendicular to the mounting plane 20 and passing through the centre line of the side wall 11; each side region is provided with a plurality of rows and a plurality of columns of second nozzle holes 14.

The two side areas are symmetrical about an upper plane and a lower plane passing through a center line of the sidewall 11, that is, the two side areas are arranged oppositely in the front-rear direction, the second spray holes 14 are arranged on the two side areas, when the aerosol is sprayed outwards, the aerosol is sprayed out from the second spray holes 14 of the two side areas, and the two side areas are located outside the installation plane 20, so that the second spray holes 14 are not arranged on the installation plane 20, and the aerosol is ensured not to be sprayed out from the installation plane 20.

Preferably, and with reference to figures 3, 5 and 7, an annular recess 10 is formed in the side wall 11 adjacent the port, the annular recess 10 being spaced from the port. Referring to fig. 3 and 6, the edge cover 3 includes a cover body 31, and the side wall 11 of the cover body 31 has a cylindrical portion 32 and an annular projection 35 in the thickness direction thereof, the annular projection 35 projecting outward (radially) in the radial direction than the cylindrical portion 32; the annular projection 35 is snap-fitted into the annular recess 10 and the cylindrical portion 32 is fitted into the port.

In the direction perpendicular to the edge cover 3 (in the axial direction), the annular protrusion 35 is located on one side of the cylindrical portion 32, and in the state that the edge cover 3 covers the port, the annular protrusion 35 is located on the inner side of the cylindrical portion 32, that is, the annular protrusion 35 is located on the left side of the cylindrical portion 32, and the edge cover 3 is clamped with the side wall 11 by the annular protrusion 35 on the cover body 31 and the annular groove 10 at the port. In a state where the edge cover 3 covers the port, the cylindrical portion 32 is located inside the sidewall 11, and the periphery of the cylindrical portion 32 is in clearance fit with the inner side surface of the sidewall 11.

On the section perpendicular to the axial direction, the cylindrical part 32 can be a cylindrical surface, and when the side cover 3 covers the port, the cylindrical part 32 is matched with the structure between the annular groove 10 and the port; in other words, the side wall 11 of the right portion of the annular groove 10 forms a catching structure that cooperates with the cylindrical portion 32 so that the catching structure can hinder the movement of the lid 3 to the side away from the bottom wall 12 (to the right) when the lid 3 closes the port.

Preferably, the side cover 3 further includes a plurality of support ribs 33 protruding from one side of the cover body 31, and the support ribs 33 radially extend along the cover body 31 and are radially distributed; one end of the inner cylinder 2 far away from the exhaust port 21 is abutted against the supporting rib 33. Specifically, as shown in fig. 6, the support ribs 33 may be distributed at equal angles along the circumferential direction of the edge cover body 31.

The supporting rib 33 can limit the end of the inner cylinder 2 far away from the exhaust port 21, so that the inner cylinder 2 can be positioned in the axial direction, and the position of the inner cylinder 2 in the aerosol fire extinguisher is ensured to be constant.

Preferably, referring to fig. 3, a central region of one end of the inner cylinder 2 away from the exhaust port 21 is further extended outward (rightward) with a cylindrical protrusion 22, and a side of the edge cover 3 facing the inner cylinder 2 is provided with a limiting groove 36 which is matched with the protrusion 22.

When the edge cover 3 is used to cover the port, before the annular protrusion 35 is engaged with the annular groove 10, a part of the projection 22 is inserted into the limiting groove 36 to roughly position the edge cover 3 and the inner cylinder 2, so that the annular protrusion 35 is substantially aligned with the annular groove 10 in the axial direction, and the edge cover 3 is conveniently used to cover the port.

As shown in fig. 6, the inner side of the support rib 33 may also form a groove wall of the stopper groove 36, so as to increase the length of the stopper groove 36 in the axial direction.

Preferably, referring to fig. 5 and 6, the aerosol fire extinguisher further comprises a sensor 5 for detecting temperature, a body 51 of the sensor is disposed between the inner barrel 2 and the side cover 3, a portion of the supporting rib 33 is provided with a notch 34 avoiding the body 51 of the sensor, and an outgoing line of the sensor 5 passes through the first line passing hole 17 and out of the housing 1.

The body 51 of the sensor is arranged between the inner cylinder 2 (one end of the inner cylinder 2 far away from the exhaust port 21) and the side cover 3, the support rib 33 of the side cover 3 interfering with the body 51 of the sensor is provided with a notch 34 to avoid the interference between the two, the body 51 of the sensor can be limited in position through the notch 34, or the body 51 of the sensor can be adhered on the inner cylinder 2 in an adhesion mode, the sensor 5 further comprises a lead 52 of the sensor connected with the body 51 of the sensor, and the lead 52 of the sensor penetrates out of the shell 1 from the first wire passing hole 17.

The sensor 5 can detect the temperature, and after the fire extinguishing agent was lighted, the fire extinguishing agent burning release aerosol to produce high temperature, therefore this high temperature can be conducted to the one end that the inner tube 2 kept away from gas vent 21, thereby detected by the sensor 5, when the temperature that detects reached the settlement temperature, alright externally send alarm signal, thereby remind the watch man this aerosol fire extinguisher to be in operating condition, there is the condition of a fire in this aerosol fire extinguisher position.

It will be understood that the above-described embodiments are illustrative only and not restrictive, and that various obvious and equivalent modifications and substitutions may be made in the details described herein by those skilled in the art without departing from the basic principles of the invention.

Claims

1. A thermosensitive wire-initiated aerosol fire extinguisher is characterized by comprising a shell, an inner barrel, a thermosensitive wire and a side cover, wherein the shell comprises a bottom wall and a side wall extending from the bottom wall, a first spray hole is formed in the bottom wall, and a second spray hole and a first wire passing hole are formed in the side wall; the inner cylinder is provided with an exhaust port and a second wire passing hole, a fire extinguishing agent is arranged in the inner cylinder, the inner cylinder is arranged in the shell and is far away from the bottom wall compared with the second spray hole, and the exhaust port faces the bottom wall; the side cover covers the port of the side wall far away from the bottom wall and abuts against one end of the inner cylinder far away from the exhaust port;

2. An aerosol fire extinguisher as claimed in claim 1, wherein one end of the wire chase extends to the first wire passing hole.

3. An aerosol fire extinguisher as claimed in claim 2, wherein said wire chase is located in a central region of said side wall in an axial direction thereof, an end of said wire chase adjacent said port extending to said first wire passing hole.

4. An aerosol fire extinguisher as claimed in any one of claims 1 to 3, wherein said side wall includes, in order along its axial direction, a first end region, a middle region and a second end region, part of the circumferential side walls of said first end region and said second end region projecting radially beyond said middle region to form a mounting boss;

and the two ends of the wire slot are positioned in the protruding area of the mounting boss in the circumferential direction of the side wall.

5. An aerosol fire extinguisher as claimed in claim 4, wherein the two mounting bosses have mounting planes which are coplanar with one another.

6. An aerosol fire extinguisher as claimed in claim 5, further comprising an adhesive glue, said adhesive glue being adhered to said mounting plane.

7. An aerosol fire extinguisher as claimed in claim 6, wherein said first end region includes two side regions of symmetry, both of said side regions lying outside said mounting plane and being symmetrical about a plane perpendicular to said mounting plane and passing through said side wall centerline; and a plurality of rows and a plurality of columns of second spray holes are respectively arranged in each side area.

8. An aerosol fire extinguisher as claimed in any one of claims 1 to 3, wherein an annular recess is formed in said side wall adjacent said port, said annular recess being spaced from said port;

9. The aerosol fire extinguisher of claim 8, wherein the side cover further comprises a plurality of support ribs protruding from one side of the cover body, the support ribs radially extending along the cover body; and one end of the inner cylinder, which is far away from the exhaust port, is abutted against the support rib.

10. The aerosol fire extinguisher of claim 9, further comprising a sensor for detecting temperature, wherein the body of the sensor is disposed between the inner cylinder and the side cover, a portion of the support ribs are provided with notches avoiding the body of the sensor, and an outgoing line of the sensor passes through the first line passing hole and out of the housing.