CN216022876U - Fuse starting drive and fire extinguisher - Google Patents

Abstract

The utility model relates to a pilot cable starting device and a fire extinguisher. This fuse starting drive includes: the shell is provided with a first cavity, a second cavity and a heat conducting part positioned between the first cavity and the second cavity, and the shell is provided with a leading-out hole communicated with the first cavity; one end of the first fuse penetrates into the first cavity through the leading-out hole, and the other end of the first fuse is arranged in the protection area; and one end of the second fuse is arranged in the second cavity, and the other end of the second fuse is used for extending to the gas generating agent. So, utilize the heat transfer that heat conduction portion produced the first fuse in with first cavity to the second fuse is lighted, and the second fuse that recycles starts to produce gas agent, need not to draw forth the second fuse directly to the protective area from the second cavity, has avoided the gas that produces gas agent to leak, is favorable to improving the fire extinguishing effect of fire extinguisher.

Description

Fuse starting drive and fire extinguisher

Technical Field

The utility model relates to the technical field of fire extinguishing equipment, in particular to a fuse starting device and a fire extinguisher.

Background

Fire extinguishers generally include stored pressure and non-stored pressure extinguishers, wherein the non-stored pressure extinguishers greatly improve safety by not storing pressure. Generally, in a non-pressure storage type fire extinguishing apparatus, a heat-sensitive wire is used to ignite a starting chemical to start a fire extinguisher, however, the heat-sensitive wire needs to be led out from the interior of the fire extinguisher, and therefore a reserved hole needs to be formed. When the thermosensitive wire burns to the inside back preformed hole of fire extinguisher and is in non-sealing state to some of the gas that starts the medicament and produce can be followed and spout in this preformed hole, thereby has reduced the eruption dynamics of fire extinguisher, influences fire control effect.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a pilot fuse starting device and a fire extinguisher which improve the above defects aiming at the problems of reduced spraying strength and poor fire extinguishing effect of the fire extinguisher caused by the pressure relief of the reserved hole in the prior art.

A fuse starter device comprising:

the shell is provided with the first cavity, the second cavity and a heat conducting part positioned between the first cavity and the second cavity, and the shell is provided with a leading-out hole communicated with the first cavity;

one end of the first fuse penetrates into the first cavity through the leading-out hole, and the other end of the first fuse is arranged in a protection area; and

and one end of the second fuse is arranged in the second cavity, and the other end of the second fuse is used for extending to the gas generating agent.

In one embodiment, one side of the heat conducting part facing the first cavity is provided with a first heat conducting boss, and the first fuse cable is wound on the first heat conducting boss at one end of the first cavity;

one side of the heat conduction part facing the second cavity is provided with a second heat conduction boss opposite to the first heat conduction boss, and one end of the second fuse wire positioned in the second cavity is wound on the second heat conduction boss.

In one embodiment, a side of the heat conducting portion facing the first cavity is provided with a groove, and the first fuse cable is located at one end of the first cavity and extends to the groove.

In one embodiment, a side of the heat conducting part facing the second cavity is provided with a heat conducting boss opposite to the groove, and the second fuse cable is wound on the heat conducting boss at one end of the second cavity.

In one embodiment, the fuse starter device further comprises a heat generating agent, and the heat generating agent is filled in the groove.

In one embodiment, an end of the first fuse in the first cavity is coated with a heat generating agent.

In one embodiment, the fuse starter device further comprises a heat generating agent filled in the first cavity.

In one embodiment, the housing comprises a first housing and a second housing, the first housing is provided with the first cavity and a containing cavity, and the leading-out hole is opened in the first housing;

the second shell is provided with an inner sleeve part which is contained in the containing cavity, and the inner sleeve part is provided with the second cavity;

the first housing and a portion of the inner jacket portion between the first cavity and the second cavity form the heat conductive portion.

In one embodiment, the first housing is provided with a first vent hole and a second vent hole, the first vent hole is communicated with the first cavity and the accommodating cavity, and the second vent hole is communicated with the accommodating cavity and the outside of the first housing;

an exhaust passage communicated with the first vent hole and the second vent hole is formed between the inner wall of the accommodating cavity and the outer wall of the inner sleeve part.

A fire extinguisher including a fuse actuating device as described in any one of the embodiments above.

In the actual use process, when a fire disaster occurs in the protection area, the first fuse starter and the fire extinguisher ignite the end of the first fuse arranged in the protection area, and the first fuse burns into the first cavity and generates heat. The heat generated by the first fuse in the first cavity is transferred into the second cavity through the heat conducting part, so that the second fuse is ignited, and the second fuse starts the gas producing agent. After the gas generating agent is started, a large amount of gas is quickly generated, so that the fire extinguishing agent is pushed to be sprayed out of the fire extinguisher, and the fire extinguishment is realized.

So, utilize the heat transfer that heat conduction portion produced the first fuse in with first cavity to the second fuse is lighted, and the second fuse that recycles starts to produce gas agent, need not to draw forth the second fuse directly to the protective area from the second cavity, has avoided the gas that produces gas agent to leak, is favorable to improving the fire extinguishing effect of fire extinguisher.

Drawings

FIG. 1 is a schematic view of a fuse starter assembly according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of a fuse starter device according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a fuse starter device according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a housing of the fuse starter assembly in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of a fire extinguisher employing the housing of the fuse starter assembly shown in FIG. 4;

FIG. 6 is a schematic view of a fuse starter device according to another embodiment of the present invention;

FIG. 7 is a schematic view showing the construction of a fire extinguisher using the fuse actuating device shown in FIG. 6;

FIG. 8 is a schematic structural view of a fuse starter device according to yet another embodiment of the present invention;

FIG. 9 is a cross-sectional view of the fuse starter device shown in FIG. 8.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

An embodiment of the present invention provides a fire extinguisher including a fuse starter for starting the fire extinguisher to extinguish a fire in a protected area.

Referring to fig. 1, in the present embodiment, the cord starting apparatus 100 includes a housing 10, a first cord 20, and a second cord 30. The housing 10 has a first cavity 11, a second cavity 12, and a heat conduction portion 13 between the first cavity 11 and the second cavity 12. The housing 10 also has an outlet (not shown) communicating the first cavity 11 with the exterior of the housing 10. One end of the first fuse cord 20 is disposed in the first cavity 11, and the other end thereof passes through the housing 10 through the outlet hole and is disposed in the protected area. One end of the second fuse 30 is disposed in the second cavity 12 and the other end is adapted to extend to the gas generant 400 to initiate the gas generant 400 when the second fuse 30 is ignited. Alternatively, both the first and second fuses 20 and 30 may be heat sensitive wires.

In the actual use process, when a fire breaks out in the protection area, the fire extinguisher and fuse starter device 100 ignites the end of the first fuse 20 disposed in the protection area, and the first fuse 20 burns into the first cavity 11 and generates heat. The heat generated in the first cavity 11 by the first fuse 20 is transferred to the second cavity 12 through the heat conduction part 13, thereby igniting the second fuse 30, so that the second fuse 30 activates the gas generant 400. After the gas generating agent 400 is started, a large amount of gas is rapidly generated, so that the fire extinguishing agent is pushed to be sprayed out of the fire extinguisher, and the fire extinguishment is realized.

Therefore, the heat generated by the first fuse 20 in the first cavity 11 is transferred to the second cavity 12 by the heat conduction part 13, the second fuse 30 is ignited, the second fuse 30 is utilized to start the gas generating agent 400, the second fuse 30 does not need to be directly led out to a protection area from the second cavity 12, the gas generated by the gas generating agent 400 is prevented from leaking, and the fire extinguishing effect of the fire extinguisher is improved.

In one embodiment of the present invention, the end of the first fuse 20 located in the first cavity 11 is coated with a heat generating agent. Alternatively, the heat generating agent may be a substance that generates a large amount of heat when heated, such as an aerosol fire extinguishing agent, and is not limited herein.

Referring to fig. 9, in another embodiment of the present invention, the first cavity 11 is filled with a heat generating agent 40, so that the heat generating agent 40 is ignited when the first fuse 20 is burned into the first cavity 11, so that the heat generating agent 40 rapidly generates a large amount of heat and transfers the heat to the second cavity 12, thereby igniting the second fuse 30.

Referring to fig. 3, in the embodiment of the utility model, a side of the heat conducting portion 13 facing the first cavity 11 has a first heat conducting boss 133, and the first fuse 20 is wound around the first heat conducting boss 133 at an end of the first cavity 11. A side of the heat conduction portion 13 facing the second cavity 12 has a second heat conduction boss 134 opposite to the first heat conduction boss 133. The second fuse 30 is wound around the second heat-conducting protrusion 134 at one end of the second cavity 12. In this way, the first heat conduction boss 133 and the second heat conduction boss 134 are designed on the two opposite sides of the heat conduction part 13, so that the first fuse 20 and the second fuse 30 can be wound and fixed conveniently; on the other hand, the heat conduction areas of the first fuse 20 and the second fuse 30 are increased, so that the heat generated by the combustion of the first fuse 20 can be intensively transferred to the first heat conduction boss 133 and the second heat conduction boss 134 and quickly transferred to the second fuse 30, the heat transfer efficiency is improved, and the time for igniting the second fuse 30 is shortened.

Referring to fig. 2, in the embodiment of the present invention, a side of the heat conducting portion 13 facing the first cavity 11 has a groove 131, and an end of the first fuse 20 located in the first cavity 11 extends to the groove 131. In this manner, one end of the first fuse 20 is disposed in the groove 131, so that heat generated by the combustion of the first fuse 20 can be concentrated in the groove 131 and rapidly transferred to the second cavity 12 through the inner wall of the groove 131 to ensure rapid and reliable ignition of the second fuse 30.

Further, the side of the heat conduction part 13 facing the second cavity 12 has a heat conduction boss 132 corresponding to the groove 131, and the second fuse 30 is wound on the heat conduction boss 132 at one end of the second cavity 12. Thus, the heat generated by the combustion of the first fuse 20 is collected in the groove 131 and rapidly transferred to the heat conduction boss 132 through the inner wall of the groove 131, and the second fuse 30 wound on the heat conduction boss 132 is ignited, thereby further ensuring the rapid and reliable ignition of the second fuse 30.

Further, the fuse starter device 100 further includes a heat generating agent 40 filled in the groove 131. Thus, the first fuse 20 burns into the first cavity 11 and ignites the heat generating agent 40, and the heat generating agent 40 burns to generate a large amount of heat, which is rapidly transferred to the heat conductive boss and ignites the second fuse 30.

Referring to fig. 4 and 5, in an embodiment of the present invention, the housing 10 includes a mounting frame 16, a first cylinder 14, a second cylinder 15 and a heat conducting plate 13'. The mounting bracket 16 has a mounting hole formed through opposite sides thereof, and an end of the first cylinder 14 has a first opening, and the end of the first cylinder 14 having the first opening is mounted in the mounting hole from one side of the mounting bracket 16. One end of the second cylinder 15 has a second opening, and the end of the second cylinder 15 having the second opening is mounted in the mounting hole by the opposite side of the mounting frame 16. The heat conducting plate 13' is disposed between the end of the first cylinder 14 having the first opening and the end of the second cylinder 15 having the second opening as the heat conducting portion 13.

The first cylinder 14 and the heat conducting plate 13 'enclose to form the first cavity 11, and the second cylinder 15 and the heat conducting plate 13' enclose to form the second cavity 12.

In a specific embodiment, the inner wall of the mounting hole is convexly provided with a protrusion 161, and the protrusion 161 extends along the circumferential direction of the mounting hole. The heat conductive plate 13' is disposed between the projection 161 and the end of the first cylinder 14 having the first opening. In this manner, the heat-conducting plate 13 'is first placed on the boss 161 from the end of the mounting hole at the time of assembly, and then the end of the first cylinder 14 having the first opening is mounted to the end of the mounting hole to press the heat-conducting plate 13' between the boss 161 and the end of the first cylinder 14 having the first opening. Then, the end of the second cylinder 15 with the second opening is mounted to the other end of the mounting hole, so that the end of the second cylinder 15 with the second opening is pressed against the side of the protrusion 161 away from the heat-conducting plate 13'. Of course, in other embodiments, the heat conducting plate 13' may also be disposed at the end of the protrusion 161 and the second cylinder 15 having the second opening, which is not limited herein.

Optionally, the end of the first cylinder 14 having the first opening is threaded into the mounting hole. One end of the second cylinder 15 having the second opening is screwed into the mounting hole. Therefore, the first cylinder 14, the second cylinder 15 and the mounting frame 16 are assembled in a threaded connection mode, the mounting and the dismounting are convenient, and the connection is reliable.

Alternatively, the heat conducting plate 13' may be made of a metal material with good heat conducting property, such as a copper sheet, an aluminum sheet, and the like.

Referring to fig. 5, in the embodiment, the fire extinguisher further includes a housing 200, a fire extinguishing agent 300, and a gas generating agent 400. The housing 200 has an inner cavity 201 and a fire outlet 202 communicating with the inner cavity, and the fire extinguishing agent 300 is contained in the inner cavity 201. The fuse starter device 100 is fixedly mounted to the housing 200 by the mounting bracket 16. The end of the housing 10 having the second cavity 12 is located in the inner cavity 201, and the end having the first cavity 11 is located outside the inner cavity 201, and the lead-out hole is opened in the portion of the housing 10 located outside the inner cavity 201. A gas generant 400 is disposed in the second cavity 12. In this manner, the first fuse 20 is ignited and burned into the first cavity 11 when a fire occurs, thereby igniting the heat generating agent 40, the heat generated from the heat generating agent 40 is transferred to the second fuse 30 through the heat conductive plate 13' and ignites the second fuse 30, and the second fuse 30 activates the gas generating agent 400. The activated gas generating agent 400 generates a large amount of gas in the second cavity 12, so as to burst the second cavity 12 into the inner cavity, and further push the fire extinguishing agent 300 in the inner cavity to be sprayed out from the spraying opening 202, thereby extinguishing the fire.

It should be noted that, in order to enable the gas generated after the gas generating agent 400 in the second cavity 12 is started to burst the second cavity 12 and enter the inner cavity 201, in an embodiment, the second cylinder 15 has a burst opening, the burst opening is covered and sealed by a burst membrane, when the air pressure in the second cavity 12 reaches a preset pressure, the burst membrane is ruptured, so that the second cavity 12 is communicated with the inner cavity 201 through the burst opening, and at this time, the gas in the second cavity 12 enters the inner cavity 201, so as to push the fire extinguishing agent 300 in the inner cavity 201 to be sprayed from the spraying opening 202. Of course, the gas in the second cavity 12 can enter the inner cavity by using a burst membrane, but other methods can be used, for example, the second cylinder 15 is made of plastic, when the gas generating agent 400 is activated to generate high pressure in the second cavity 12, so as to destroy the second cylinder 15 and push out the fire extinguishing agent 300 in the inner cavity 201.

The fire extinguishing agent 300 of the present application may be a fire extinguishing medium such as dry powder, water, or perfluorohexanone fire extinguishing agent 300, and is not limited herein. The gas generating agent 400 of the present application may be, for example, an aerosol fire extinguishing agent 300, which generates a large amount of gas when heated, and is not limited thereto. The heat generating agent 40 of the present application may be a substance that generates a large amount of heat when heated, such as the aerosol fire extinguishing agent 300, and is not limited herein.

Referring to fig. 6 and 7, in another embodiment of the present invention, the housing 10 includes a first cylinder 14, a second cylinder 15 and a heat-conducting plate 13', and the inner wall of the second cylinder 15 includes a first section 151 and a second section 152 connected to the first section 151. The thermally conductive plate 13' is disposed between the first segment 151 and the second segment 152. The first cylinder 14 has a first opening at one end thereof, and the first cylinder 14 has a first opening at one end thereof screwed into the first section 151. The heat conducting plate 13 'and the first cylinder 14 enclose to form the first cavity 11, and the heat conducting plate 13' and the second section 152 enclose to form the second cavity 12.

Further, a step 153 is provided between the first segment 151 and the second segment 152, and the heat conductive plate 13' is located between the step 153 and the end of the first cylinder 14 having the first opening. Thus, in assembly, the heat conducting plate 13 'is first disposed on the step 153 between the first segment 151 and the second segment 152, and then the end of the first cylinder 14 having the first opening is screwed into the first segment 151, and the heat conducting plate 13' is compressed between the step 153 and the end of the first cylinder 14 having the first opening.

In particular embodiments, the fire extinguisher further comprises a housing 200, a fire suppressant 300, and a gas generant 400. A blast-discharging piece 204 is arranged in the housing 200, and the inner cavity of the housing 200 is divided into a first accommodating cavity 201a and a second accommodating cavity 201b by the blast-discharging piece 204. The housing 200 has a burst port 202 communicating with the second receiving chamber 201b, and the fire extinguishing agent 300 is received in the second receiving chamber 201 b. The fuse starter 100 is installed in the housing 200, and one end of the housing 10 having the second cavity 12 is located in the first receiving cavity 201a, and one end having the first cavity 11 is located outside the housing 200. The outlet is opened at a portion of the housing 10 outside the casing 200, and the gas generating agent 400 is disposed in the first accommodating chamber 201 a.

Thus, when a fire occurs, the first fuse 20 is ignited, the first fuse 20 is burned into the first cavity 11 and ignites the heat generating agent 40, heat generated by the heat generating agent 40 is transferred to the second fuse 30 in the second cavity 12 through the heat conducting plate 13', the second fuse 30 is ignited to start the gas generating agent 400, the gas generating agent 400 rapidly generates a large amount of gas, the pressure in the first accommodating cavity 201a is increased to damage the explosion-proof piece 204, and the gas in the first accommodating cavity 201a enters the second accommodating cavity 201b and the fire extinguishing agent 300 is sprayed out of the spraying opening 202.

Referring to fig. 8 and 9, in another embodiment of the present invention, the housing 10 includes a first housing 17 and a second housing 18, the first housing 17 has the first cavity 11 and a receiving cavity (not shown), and the lead-out hole is opened on the first housing 17.

The second housing 18 has an inner sleeve portion 181 received in the receiving cavity, and the inner sleeve portion 181 has a second cavity 12. The first housing 17 and the portion of the inner sheath portion 181 located between the first cavity 11 and the second cavity 12 form the heat conduction portion 13. One end of the first fuse 20 is arranged in the protection area, and the other end is introduced into the first cavity 11 through the lead-out hole, and the first cavity 11 is filled with the heat generating agent 40. One end of the second fuse 30 is located in the second cavity 12 and the other end is adapted to be connected to a gas generant 400.

Thus, in the event of a fire, the first fuse 20 is ignited and burned into the first cavity 11, thereby igniting the heat generating agent 40 in the first cavity 11. The ignited heat generating agent 40 rapidly generates a large amount of heat, which is rapidly transferred into the second cavity 12 of the second housing 18, thereby igniting the second fuse 30 in the second cavity 12, causing the second fuse 30 to activate the gas generant 400.

Specifically, in the embodiment, the first housing 17 is provided with a first vent hole 171 and a second vent hole 172, the first vent hole 171 communicates with the first cavity 11 and the accommodating cavity, and the second vent hole 172 communicates with the accommodating cavity and the outside of the first housing 17. An exhaust passage for communicating the first vent hole 171 and the second vent hole 172 is formed between the inner wall of the receiving chamber and the outer wall of the inner sleeve 181. In this way, since the heat generating agent 40 generates a large amount of gas while generating a large amount of heat, the gas enters the exhaust passage from the first vent hole 171 and is discharged to the outside of the first housing 17 from the second vent hole 172.

Since the gas generated by the heat generating agent 40 is a high-temperature gas, the high-temperature gas flows between the inner wall of the housing chamber and the outer wall of the inner sleeve 181, and heat is transferred from the outer wall of the inner sleeve 181 to the second cavity 12 inside the inner sleeve 181, thereby igniting the second fuse 30. That is, the heat generated by the heat generating agent 40 is transferred into the second cavity 12 through the heat conduction portion 13, and is carried into the exhaust passage between the outer wall of the inner sleeve portion 181 and the inner wall of the housing chamber through the airflow, and is transferred into the second cavity 12 inside the inner sleeve portion 181 from the outer wall of the inner sleeve portion 181.

Further, the inner housing 181 of the second housing 18 is made of a heat conductive material, so that the heat carried by the airflow can be rapidly transferred to the second cavity 12 inside the inner housing 181. Alternatively, the material of the inner sleeve 181 of the second casing 18 is copper, copper alloy, aluminum alloy, etc., as long as the requirement of heat conduction can be satisfied, and is not limited herein.

In a specific embodiment, the fire extinguisher further comprises a housing, a fire extinguishing agent and a gas generating agent. The shell is internally provided with an explosion unloading piece which divides the inner cavity of the shell into a first containing cavity and a second containing cavity. The shell is provided with a eruption port communicated with the second accommodating cavity, and the fire extinguishing agent is accommodated in the second accommodating cavity. The fuse starter 100 is installed in the housing, the second cavity 12 of the housing 10 is communicated with the first receiving cavity, the end of the housing 10 having the first cavity 11 is located outside the housing, the outlet is opened in the portion of the housing 10 located outside the housing, and the gas generating agent is disposed in the first receiving cavity.

Therefore, when a fire disaster happens, the first fuse 20 is ignited, the first fuse 20 burns into the first cavity 11, the heat generating agent 40 is ignited, heat generated by the heat generating agent 40 is transferred to the second fuse 30 in the second cavity 12, the second fuse 30 is ignited to start the gas generating agent, the gas generating agent rapidly generates a large amount of gas, the air pressure in the first accommodating cavity rises to damage the explosion-discharging piece, and at the moment, the gas in the first accommodating cavity enters the second accommodating cavity and sprays the fire extinguishing agent out of the spraying opening.

Further, the second housing 18 also has an outer sleeve portion 182 coupled to the inner sleeve portion 181, the outer sleeve portion 182 having an opening 1821 in communication with the second cavity 12. The outer casing portion 182 is fixedly connected to the housing, and the second cavity 12 is communicated with the first receiving cavity through the opening 1821. One end of the second fuse 30 is located in the second cavity 12, and the other end is led out to the first accommodating cavity through the opening 1821 and connected with the gas generating agent in the first accommodating cavity, so that the second fuse 30 can be rapidly burnt into the first accommodating cavity after being ignited, and further the gas generating agent is started. Optionally, the outer sleeve portion is threadedly connected to the housing.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A fuse starter device, comprising:

the shell is provided with a first cavity, a second cavity and a heat conducting part positioned between the first cavity and the second cavity, and the shell is provided with a leading-out hole communicated with the first cavity;

one end of the first fuse penetrates into the first cavity through the leading-out hole, and the other end of the first fuse is arranged in a protection area; and

and one end of the second fuse is arranged in the second cavity, and the other end of the second fuse is used for extending to the gas generating agent.

2. The device as claimed in claim 1, wherein the side of the heat conducting portion facing the first cavity has a first heat conducting boss, and the first fuse is wound around the first heat conducting boss at one end of the first cavity;

one side of the heat conduction part facing the second cavity is provided with a second heat conduction boss opposite to the first heat conduction boss, and one end of the second fuse cord positioned in the second cavity is wound on the second heat conduction boss.

3. The device as claimed in claim 1, wherein the side of the heat conducting portion facing the first cavity has a groove, and the first fuse is located at one end of the first cavity and extends to the groove.

4. The device as claimed in claim 3, wherein the side of the heat conducting portion facing the second cavity has a heat conducting boss opposite the recess, and the second fuse is wound around the heat conducting boss at the end of the second cavity.

5. The device of claim 3, further comprising a heat generating agent, wherein the heat generating agent fills the groove.

6. The fuse starter device of claim 1 wherein an end of said first fuse within said first cavity is coated with a heat generating agent.

7. The device of claim 1, further comprising a heat generating agent filled in the first cavity.

8. The device as claimed in claim 7, wherein the housing includes a first housing and a second housing, the first housing having the first cavity and a receiving cavity, the exit opening being provided in the first housing;

the second shell is provided with an inner sleeve part which is contained in the containing cavity, and the inner sleeve part is provided with the second cavity;

the first housing and a portion of the inner jacket portion between the first cavity and the second cavity form the heat conductive portion.

9. The device as claimed in claim 8, wherein the first housing defines a first vent hole and a second vent hole, the first vent hole communicates with the first cavity and the receiving cavity, and the second vent hole communicates with the receiving cavity and the outside of the first housing;

an exhaust passage communicated with the first vent hole and the second vent hole is formed between the inner wall of the accommodating cavity and the outer wall of the inner sleeve part.

10. A fire extinguisher including a fuse actuating device as claimed in any one of claims 1 to 9.

Images