CN217612613U

CN217612613U - Multidirectional injection formula aerosol fire extinguisher

Info

Publication number: CN217612613U
Application number: CN202220957256.1U
Authority: CN
Inventors: 李双庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-04-24
Filing date: 2022-04-24
Publication date: 2022-10-21
Anticipated expiration: 2032-04-24

Abstract

The utility model relates to a multidirectional injection type aerosol fire extinguisher, which comprises a shell and an end cover which are mutually covered, an inner cylinder and a starting line, wherein the shell is provided with a bottom wall and a side wall which circumferentially surrounds the bottom wall, the bottom wall is provided with a plurality of first spray holes, the side wall is provided with a spray hole area and a line passing hole, and the spray hole area is provided with a plurality of second spray holes; the inner cylinder is provided with a first end and a second end, and the first end is provided with an exhaust port; the inner cylinder is arranged between the spray hole area and the end cover, the exhaust port faces the bottom wall, and the second end of the inner cylinder is abutted against the end cover; a second coolant is arranged in a space between the bottom wall and the first end in the shell; one end of the starting wire is inserted into the fire extinguishing agent of the inner cylinder, and the other end of the starting wire penetrates out of the shell through the wire hole. Through set up the second coolant in the space between diapire and first end for the aerosol that spouts from the gas vent, through the dispersion of second coolant, make from first orifice and second orifice can equally and importantly spout aerosol outwards, promote the radial fire control effect to aerosol fire extinguisher.

Description

Multidirectional injection formula aerosol fire extinguisher

Technical Field

The utility model relates to a fire extinguisher technical field especially relates to a multidirectional injection formula aerosol fire extinguisher.

Background

In the prior art, most fire extinguishers are sprayed in one direction, for example, in the prior document CN2106127578U, a non-pressure-storage type automatic fire extinguishing device is disclosed, in which a front cover is arranged on the upper part of a housing, and the front cover is provided with a round hole and a long hole which are positioned at the top of the front cover and a long hole which is positioned at the side part of the front cover. The fire extinguishing agent sprayed from the spray holes of the inner cylinder faces the round holes and the long holes at the top, so most of the fire extinguishing agent can be sprayed from the top of the front blocking cover, and a small part of the fire extinguishing agent is sprayed from the long holes at the side part of the front blocking cover, so that the main spray range of the fire extinguishing agent sprayed by the automatic fire extinguishing device is the front area of the front blocking cover, other areas are slowly diffused, and the fire extinguishing effect is not ideal.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a multidirectional injection formula aerosol fire extinguisher sets up the second coolant through the space between diapire and first end for from gas vent spun aerosol, through the dispersion of second coolant, make from first orifice and second orifice can equally importantly spout aerosol outwards, promote the radial fire control effect to aerosol fire extinguisher.

The utility model discloses the technical scheme who adopts:

a multidirectional spraying type aerosol fire extinguisher comprises a shell, an end cover, an inner cylinder and a starting line, wherein the shell and the end cover are mutually covered, the shell is provided with a bottom wall and a side wall circumferentially surrounding the bottom wall, a plurality of first spray holes are formed in the bottom wall, a spray hole area and a line passing hole are formed in the side wall, and a plurality of second spray holes are formed in the spray hole area;

the inner cylinder is provided with a first end and a second end, and the first end is provided with an exhaust port; a fire extinguishing agent and a first coolant are sequentially arranged in the inner barrel along the axial direction of the inner barrel, and the first coolant is closer to the first end; the inner cylinder is arranged between the spray hole area and the end cover, the first end of the inner cylinder is in clearance fit with the side wall, the exhaust port faces the bottom wall, and the second end of the inner cylinder is abutted to the end cover;

a space within the housing between the bottom wall and the first end is provided with a second coolant;

one end of the starting wire is inserted into the fire extinguishing agent of the inner barrel, and the other end of the starting wire penetrates out of the shell through the wire passing hole.

Preferably, the exhaust port is located in a central region of the first end and is opposite to regions where the first spray holes are located.

Preferably, the nozzle hole regions include two side regions that are diametrically opposed, and each of the side regions is provided with the second nozzle holes arranged in a plurality of rows and a plurality of columns.

Preferably, each second nozzle hole is a strip-shaped hole, and the length direction of the strip-shaped hole is consistent with the circumferential direction of the side wall.

Preferably, the housing further includes a plurality of protruding structures protruding from the side wall, and the protruding structures are located on one side of the nozzle hole area close to the end cap and are arranged along the circumferential direction of the side wall; the first end abuts against the projection structure in the axial direction of the side wall.

Preferably, the protruding structure includes a rib, the rib is along the axial extension of lateral wall, and partial rib is kept away from the tip of first end with diapire forms an organic whole structure.

Preferably, the wire through hole is positioned in the area of the side wall far away from the hole spraying area.

Preferably, the side wall includes a middle section and end sections located at two ends of the middle section, partial areas of the end sections in the circumferential direction protrude outwards than the middle section to form bosses, and the wire passing hole is located between the two bosses; the portion of the activation wire extending out of the housing is helically wound over the intermediate section.

Preferably, the inner wall surface of the side wall is of a stepped structure, and a small-diameter section of the stepped structure is close to the inner cylinder; the first end of the inner cylinder is abutted to the step surface of the step structure.

Preferably, an avoiding notch is formed in one surface, facing the inner cylinder, of the end cover;

the aerosol fire extinguisher further comprises a sensor, the sensor comprises a sensor body and a leading-out wire led out from the sensor body, and the sensor body is attached to the second end and is positioned in the avoidance notch; the outgoing line passes through the shell through the line passing hole.

The utility model has the advantages that:

the utility model discloses in, when the condition of a fire takes place in the external world, the fire extinguishing agent is lighted to the start line, and the fire extinguishing agent burning release aerosol, and aerosol spouts to the space between diapire and the first end from the gas vent through first coolant in, through the second coolant in this space, is dispersed into mixed and disorderly, dispersed air current, later from first orifice and second orifice blowout for first orifice and second orifice can equal the important aerosol of outwards spouting, have increased the scope that the aerosol sprays, promote fire extinguishing effect; and because the second cooling agent is arranged outside the inner cylinder, the pressure maintaining effect on the pressure of the combustion chamber of the inner cylinder can be achieved, so that the flame pressure at the fire extinguishing agent is ensured, the combustion efficiency of the fire extinguishing agent is increased, the total amount of aerosol sprayed out from the second spray holes is increased, and the fire extinguishing effect of the aerosol fire extinguisher is further improved.

Drawings

In the drawings:

FIG. 1 is a schematic structural view of a preferred embodiment of a multi-directional spray type aerosol fire extinguisher according to the present invention;

FIG. 2 is an exploded view of a preferred embodiment of the aerosol fire extinguisher of FIG. 1;

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

FIG. 4 is a cross-sectional view of the housing;

fig. 5 is a schematic view of the structure of the end cap.

In the figure: 1. a housing; 2. an inner barrel; 3. an end cap; 4. starting a line; 5. a sensor;

11. a side wall; 12. a bottom wall; 13. a rib is protruded; 14. an opening; 15. a first nozzle hole; 16. a second nozzle hole; 17. a hole spraying area; 18. a boss; 19. a wire passing hole;

21. an exhaust port; 31. avoiding the notch; 51. a sensor body; 52. and (6) leading out wires.

171. A side region; 172. and (5) cooling the space.

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. 1-5, the utility model provides a multidirectional injection formula aerosol fire extinguisher, including shell 1 and the end cover 3 that covers each other and close to and inner tube 2 and start line 4, shell 1 has diapire 12 and circumference and encircles the lateral wall 11 of diapire 12, is equipped with a plurality of first orifices 15 on the diapire 12, is equipped with jet orifice region 17 and crosses line hole 19 on the lateral wall 11, is equipped with a plurality of second orifices 16 on the jet orifice region 17.

The inner cylinder 2 is provided with a first end and a second end, and the first end is provided with an exhaust port 21; a fire extinguishing agent and a first coolant are sequentially arranged in the inner cylinder 2 along the axial direction of the inner cylinder, and the first coolant is closer to the first end; the inner cylinder 2 is arranged between the spray hole area 17 and the end cover 3, the first end of the inner cylinder is in clearance fit with the side wall 11, the exhaust port 21 faces the bottom wall 12, and the second end of the inner cylinder abuts against the end cover 3.

The space inside the housing 1 between the bottom wall 12 and the first end is provided with a second coolant.

One end of the starting wire 4 is inserted into the fire extinguishing agent of the inner cylinder 2, and the other end passes through the shell 1 through the wire hole 19.

The first end of the inner cylinder 2 is provided with an exhaust port 21, a fire extinguishing agent and a first coolant (not shown in the figure) are arranged in the inner cylinder 2, the first coolant is closer to the exhaust port 21 than the fire extinguishing agent, namely the first coolant and the fire extinguishing agent are sequentially arranged from the first end to the second end, so that after the fire extinguishing agent is ignited, the fire extinguishing agent releases aerosol, and the aerosol is sprayed out from the exhaust port 21 through the first coolant.

In some embodiments, the fire extinguishing agent is surrounded by a silicone casing (the first cooling agent is not surrounded by the silicone casing), the silicone casing has an opening facing the exhaust port 21, one end of the activation wire 4 is inserted into the fire extinguishing agent from the position of the opening 14 of the silicone casing, the activation wire 4 can pass between the silicone casing and the side wall 11 of the inner barrel 2, and pass out from the second end of the inner barrel 2 (a corresponding wire passing hole can be provided at the second end), and then pass out from the wire passing hole 19 on the side wall 11 to the housing 1.

The shell 1 is of a cylindrical structure, an opening 14 is formed at one end of the side wall 11, which is far away from the bottom wall 12, the inner cylinder 2 is installed in the shell 1 from the opening 14, in the shell 1, a first end of the inner cylinder 2 faces the bottom wall 12, a second end of the inner cylinder 2 faces the opening 14, a gap is reserved between the first end and the bottom wall 12, the first end, the bottom wall 12 and the side wall enclose a cooling space 172, a part of the side wall 11 corresponding to the cooling space 172 is a spray hole area 17 on the side wall 11, that is, the spray hole area 17, the bottom wall 12 and the first end enclose the cooling space 172, a first spray hole 15 is arranged on the bottom wall 12, and a second spray hole 16 is arranged on the spray hole area 17; of course, the portion of the sidewall 11 corresponding to the temperature reduction space 172 may also be the injection hole region 17, that is, in the axial direction, the length of the injection hole region 17 is smaller than the length of the temperature reduction space 172, and the injection hole region 17 is completely located in the range of the temperature reduction space 172, in this case, it is preferable that the injection hole region 17 is disposed close to the bottom wall 12.

The cooling space 172 is filled with a second coolant, which may be in the form of block, sheet, or particle, so that a plurality of interconnected gaps are formed between the second coolant in the cooling space 172, thereby forming a plurality of disordered, fine, and airflow channels, through which the exhaust port 21 of the inner cylinder 2 communicates with the first nozzle holes 15 and the second nozzle holes 16. Thus, when the fire extinguishing agent in the inner barrel 2 is ignited, the fire extinguishing agent is combusted to release aerosol, the aerosol is sprayed from the exhaust port 21 through the first cooling agent of the inner barrel 2 and is dispersed through the airflow channels, and the aerosol sprayed from the exhaust port 21 does not directly impact the bottom wall 12, so that the aerosol is sprayed out from the first spray holes 15 and the second spray holes 16 relatively uniformly, that is, the flow speed of the aerosol sprayed from the first spray holes 15 is substantially equal to the flow speed of the aerosol sprayed from the second spray holes 16, for example, the cross-sectional area (the cross-section perpendicular to the spraying direction of the aerosol from the first spray holes 15) of the first spray holes 15 is equal to the cross-sectional area (the cross-section perpendicular to the spraying direction of the aerosol from the second spray holes 16) of the second spray holes 16, so that the sprayed aerosol from the first spray holes 15 and the second spray holes 16 is substantially equal in importance, and the aerosol can be sprayed out from the first spray holes 15 in the axial direction and the second spray holes 16 in the radial direction, so that the aerosol can be sprayed out through the first spray holes 15 in the radial direction, and the aerosol can be sprayed out in the outside more effectively.

First coolant and second coolant can hinder the flow of aerosol for aerosol gathers in the burning department of fire extinguishing agent, increases the flame pressure of fire extinguishing agent burning department, thereby improves the combustion efficiency of fire extinguishing agent, and makes the more abundant burning of fire extinguishing agent, thereby increases the inside atmospheric pressure of aerosol fire extinguishing agent, makes the aerosol that spouts from first orifice 15 and second orifice 16 have higher velocity of flow, thereby promotes the fire suppression effect of aerosol fire extinguishing agent.

When the aerosol passes through the first cooling agent and the second cooling agent, the first cooling agent and the second cooling agent can cool the aerosol, so that the temperature of the aerosol sprayed from the first spray holes 15 and the second spray holes 16 is prevented from being too high; the residue in the aerosol released by the fire extinguishing agent is blocked by the first coolant and the second coolant when the aerosol passes through the first coolant and the second coolant, so that the residue of the aerosol sprayed from the aerosol fire extinguisher is reduced.

The starting wire 4 can be a heat-sensitive wire or an electric initiating wire, when the heat-sensitive wire is adopted, the heat-sensitive wire is ignited by external fire, and the fire extinguishing agent is ignited by the heat-sensitive wire, so that the aim of spraying the aerosol outwards by the aerosol fire extinguisher is fulfilled; when an electrical initiation wire is used, a control signal caused by the fire ignites the fire suppressant through the electrical initiation wire.

Preferably, the exhaust port 21 is located in a central region of the first end.

The exhaust port 21 (the number of the exhaust ports 21 can be only one) is communicated with the cooling space 172 through the central area located at the first end, the cooling space 172 is obviously reduced, the air pressure of the area, close to the first end, of the cooling space 172 is basically consistent with the air pressure of the position where the first coolant is located, the fire extinguishing agent is in a high-pressure state in the whole combustion process, and the combustion efficiency of the fire extinguishing agent is improved.

Preferably, the nozzle hole region 17 includes two side regions 171 opposite in the radial direction, and each side region 171 is provided with the second nozzle holes 16 arranged in a plurality of rows and a plurality of columns.

The second spray holes 16 are formed at the two side regions 171, and when the aerosol is sprayed from the second spray holes 16, the aerosol is sprayed outwardly along the two side regions 171, thereby preferentially covering the space radially outside the two side regions 171, so that when the aerosol fire extinguisher is installed, the installation position of the aerosol fire extinguisher may be adjusted such that the two side regions 171 are directed toward the location where the fire is likely to occur, thereby ensuring the purpose of extinguishing the fire at the first time.

Certainly, the second nozzle holes 16 may also be uniformly distributed in the circumferential direction of the annular nozzle hole area 17, so that the aerosol sprayed from the nozzle hole area 17 can cover the circumferential space around the aerosol fire extinguisher as much as possible, and the purpose that the aerosol can be more efficiently filled outside is achieved.

Preferably, each second nozzle hole 16 is a strip-shaped hole, and the length direction of the strip-shaped hole is consistent with the circumferential direction of the side wall 11.

The strip-shaped second spray hole 16 enables the aerosol sprayed from the second spray hole 16 to flow from inside to outside in the radial direction, and meanwhile, the strip-shaped hole extends along the circumferential direction, so that the aerosol can be easily spread in the circumferential direction, and the aerosol can easily cover the circumferential space on the outer side of the aerosol fire extinguisher.

Of course, the second nozzle hole 16 may also be circular, triangular or rectangular.

Preferably, referring to fig. 3 and 4, the housing 1 further includes a plurality of protruding structures protruding from the side wall 11, the protruding structures are located on one side of the nozzle hole region 17 close to the end cover 3, and are arranged along the circumferential direction of the side wall 11; the first end abuts the boss structure in the axial direction of the side wall 11.

The protruding structure has a stop surface facing the opening 14, the stop surface is flush with one end of the nozzle hole region 17 close to the opening 14, when the inner cylinder 2 is installed in the housing 1, the first end of the inner cylinder 2 abuts against the stop surface, so that the position of the inner cylinder 2 in the housing 1 is limited, and a cooling space 172 is formed between the inner cylinder 2 and the bottom wall 12 for arranging the second coolant.

Of course, instead of providing the protruding structure in the outer casing 1, the second coolant may be directly placed into the inner tube 2 from the opening 14, and after the cooling space 172 is filled with the second coolant, the inner tube 2 is installed into the inner tube 2 from the opening 14, and the position of the first end of the inner tube 2 is directly defined by the second coolant.

Preferably, the protruding structure includes a rib 13, the rib 13 extends along the axial direction of the side wall 11, and the end of part of the rib 13 far from the first end forms an integral structure with the bottom wall 12. That is, all of the ribs 13 may extend to the bottom wall 12; it is also possible that only part of the bead 13 extends to the bottom wall 12. The ribs 13 are strip-shaped, one end of the length direction of each rib forms a stop surface, the other ends of some ribs 13 extend to the bottom wall 12, and the ribs 13, the bottom wall 12 and the side wall 11 are of an integral structure, if the ribs are formed by injection molding together, the extending directions of the ribs 13 do not pass through the second spray holes 16, so that the ribs 13 have higher structural strength, and the positions of the inner barrel 2 in the axial direction are effectively limited when the aerosol is sprayed out of the inner barrel 2. For the convex rib 13 extending through the second nozzle hole 16, the other end may also extend to the bottom wall 12, and only the air flow at this position will be divided into two paths to be respectively ejected from two sides of the convex rib 13; alternatively, the rib 13 may be divided into a plurality of sections in the extending direction by the second nozzle hole 16.

Preferably, referring to fig. 4, the via hole 19 is located in the area of the sidewall 11 away from the nozzle hole area 17.

The line passing hole 19 is positioned on the corresponding partial side wall 11 of the inner barrel 2, so that the line passing hole 19 is close to the second end of the inner barrel 2, the length of the starting line 4 between the inner barrel 2 and the line passing hole 19 is reduced as much as possible, and particularly for the thermosensitive line, the thermosensitive line as long as possible is positioned on the outer side of the shell 1, so that the thermosensitive line can more sensitively sense the external temperature, and the fire extinguishing agent can be ignited in the first time when a fire occurs.

Of course, the starting line 4 may also pass through the housing 1 from the first nozzle hole 15 or the second nozzle hole 16, or a wire through hole 19 is provided on the end cap 3, and the starting line 4 passes through the wire through hole 19 on the end cap 3.

Preferably, referring to fig. 1 and 2, the side wall 11 includes a middle section and end sections at both ends of the middle section, partial areas of the end sections in the circumferential direction protrude outward from the middle section to form bosses 18, and the wire passing hole 19 is located between the two bosses 18.

The two end sections are both protruded outwards in the radial direction to form the bosses 18, the protruding directions of the two bosses 18 are the same, when the aerosol fire extinguisher is installed, the aerosol fire extinguisher is installed in a designated area through the two bosses 18, and after the aerosol fire extinguisher is installed, the wire through hole 19 faces the designated area, so that the wire through hole 19 cannot be directly observed from the outside, and the attractiveness of the aerosol fire extinguisher is improved. When the starting line 4 is pulled outside, the starting line 4 is obviously bent at the position of the line passing hole 19, so that the function of certain pull force blocking can be achieved, the starting line 4 cannot be easily separated from the fire extinguishing agent, and the normal work of the aerosol fire extinguisher can be ensured.

Preferably, the portion of the activation wire 4 extending out of the housing 1 is helically wound over a middle section, see fig. 1.

The starting wire 4 is wound a plurality of times in the circumferential direction of the housing 1 to prevent the starting wire 4 from being scattered in a mess in the installation space of the aerosol fire extinguisher and prevent the starting wire 4 from being accidentally torn off. Of course, the starting cord 4 may not be helically wound on the intermediate section.

Preferably, the inner wall surface of the side wall 11 is of a step structure, and the small-diameter section of the step structure is close to the inner cylinder 2; the first end of the inner cylinder 2 is abutted against the step surface of the step structure.

The stepped structure may be arranged annularly about the axis of the side wall 11, so that the stepped structure may form an annular stepped surface facing the opening 14 for defining the axial position of the first end of the inner barrel 2.

Preferably, the end cap 3 is provided with an escape notch 31 on a surface facing the inner cylinder 2.

Referring to fig. 2, the aerosol fire extinguisher further comprises a sensor 5, the sensor 5 comprises a sensor body 51 and a leading-out wire 52 led out from the sensor body 51, and the sensor body 51 is attached to the second end and is located at the avoidance notch 31; the lead wires 52 pass out of the housing 1 through the wire holes 19.

The sensor body 51 is arranged between the second end and the end cover 3, the part of the end cover 3 interfering with the sensor body 51 is provided with the avoiding gap 31 so as to avoid the problem of interference between the second end and the end cover 3, the position of the sensor body 51 can be limited by the avoiding gap 31, or the sensor body 51 can be bonded on the second end in a bonding mode, and the leading-out wire 52 of the sensor 5 extends out of the shell 1 from the wire passing hole 19.

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, because the position of fire extinguishing agent is close to the second end, therefore this high temperature can conduct to the second end, thereby detected by sensor 5, when the temperature that detects reaches the settlement temperature, alright externally send alarm signal, thereby remind the person on duty 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 multidirectional spraying type aerosol fire extinguisher is characterized by comprising a shell (1), an end cover (3), an inner barrel (2) and a starting line (4), wherein the shell (1) is mutually covered, the shell is provided with a bottom wall (12) and a side wall (11) which circumferentially surrounds the bottom wall (12), the bottom wall (12) is provided with a plurality of first spray holes (15), the side wall (11) is provided with a spray hole area (17) and a line passing hole (19), and the spray hole area (17) is provided with a plurality of second spray holes (16);

the inner cylinder (2) is provided with a first end and a second end, and the first end is provided with an exhaust port (21); a fire extinguishing agent and a first coolant are sequentially arranged in the inner barrel (2) along the axial direction of the inner barrel, and the first coolant is closer to the first end; the inner cylinder (2) is arranged between the spray hole area (17) and the end cover (3), the first end of the inner cylinder is in clearance fit with the side wall (11), the exhaust port (21) faces the bottom wall (12), and the second end of the inner cylinder abuts against the end cover (3);

-the space inside the housing (1) between the bottom wall (12) and the first end is provided with a second coolant;

one end of the starting wire (4) is inserted into the fire extinguishing agent of the inner barrel (2), and the other end of the starting wire passes through the wire passing hole (19) and penetrates out of the shell (1).

2. An aerosol fire extinguisher according to claim 1, wherein the air outlet (21) is located in a central region of the first end.

3. An aerosol fire extinguisher according to claim 1, characterized in that the orifice area (17) comprises two diametrically opposed side areas (171), each of the side areas (171) being provided with the second orifices (16) arranged in a plurality of rows and columns.

4. An aerosol fire extinguisher according to claim 1, wherein each of said second nozzle holes (16) is a strip-shaped hole having a length direction coinciding with the circumferential direction of said side wall (11).

5. An aerosol fire extinguisher according to claim 1, characterized in that the housing (1) further comprises a plurality of raised structures protruding into the side wall (11), the raised structures are located on one side of the orifice region (17) close to the end cap (3) and are arranged along the circumference of the side wall (11); the first end abuts against the projection structure in the axial direction of the side wall.

6. An aerosol fire extinguisher according to claim 5, wherein said raised formation comprises a rib (13), said rib (13) extending axially of said side wall (11), and the end of part of said rib (13) remote from said first end is formed as a unitary structure with said bottom wall (12).

7. An aerosol fire extinguisher according to claim 1, wherein the wire passing hole (19) is located in a region of the side wall (11) remote from the orifice region (17).

8. An aerosol fire extinguisher according to claim 1, wherein the side wall (11) comprises a middle section and end sections at both ends of the middle section, the end sections are protruded outwards from the middle section in partial areas in the circumferential direction to form bosses (18), and the wire passing hole (19) is located between the two bosses (18); the part of the starting wire (4) extending out of the shell (1) is spirally wound on the middle section.

9. An aerosol fire extinguisher according to claim 1, characterized in that the inner wall surface of the side wall (11) is of a stepped structure, the small diameter section of the stepped structure being close to the inner barrel (2); the first end of the inner cylinder (2) is abutted against the step surface of the step structure.

10. An aerosol fire extinguisher according to any one of claims 1 to 9, characterized in that the face of the end cap (3) facing the inner barrel (2) is provided with an escape notch (31);

the aerosol fire extinguisher further comprises a sensor (5), the sensor (5) comprises a sensor body (51) and a leading-out wire (52) led out from the sensor body (51), and the sensor body (51) is attached to the second end and is located in the avoiding notch (31); the outgoing line (52) passes through the line passing hole (19) and out of the shell (1).