Fuse starting device and fire extinguisher

Abstract

The present invention relates to a fuse starting device and a fire extinguisher. The fuse starting device includes: a housing having a first cavity, a second cavity, and a heat conducting portion located between the first cavity and the second cavity, and the housing is provided with an outlet hole communicating with the first cavity; a first fuse, one end of which penetrates into the first cavity through the outlet hole, and the other end is arranged in a protection area; and a second fuse, one end of which is arranged in the second cavity, and the other end is used to extend to a gas generating agent. In this way, the heat generated by the first fuse in the first cavity is transferred to the second cavity by the heat conducting portion, and the second fuse is ignited, and then the gas generating agent is started by the second fuse, without directly leading the second fuse from the second cavity to the protection area, avoiding the leakage of the gas generated by the gas generating agent, and being beneficial to improving the fire extinguishing effect of the fire extinguisher.

Description

Technical Field

[0001] The present invention relates to the technical field of fire extinguishing equipment, and particularly to a fuse starting device and a fire extinguisher. Background Art

[0002] Fire extinguishers generally include pressure storage type and non-pressure storage type. Among them, for non-pressure storage type fire extinguishers, the safety is greatly improved because there is no need for pressure storage. Generally, in a non-pressure storage type fire extinguishing device, a thermal fuse is used to ignite a starting agent to realize the startup of the fire extinguisher. However, since the thermal fuse needs to be led out from the inside of the fire extinguisher, a reserved hole needs to be opened. When the thermal fuse burns to the inside of the fire extinguisher, the reserved hole is in a non-sealed state, so a part of the gas generated by the starting agent will spray out from the reserved hole, thus reducing the spraying force of the fire extinguisher and affecting the fire extinguishing effect. Summary of the Invention

[0003] Based on this, it is necessary to provide a fuse starting device and a fire extinguisher that can improve the above defects for the problem in the prior art that the reserved hole causes pressure relief, resulting in a reduction in the spraying force of the fire extinguisher and poor fire extinguishing effect.

[0004] A fuse starting device includes:

[0005] A housing having the first cavity, the second cavity, and a heat conducting part located between the first cavity and the second cavity, and the housing is provided with a lead-out hole communicating with the first cavity;

[0006] A first fuse, one end of which penetrates into the first cavity through the lead-out hole, and the other end is arranged in a protection area; and

[0007] A second fuse, one end of which is arranged in the second cavity, and the other end is used to extend to a gas generating agent.

[0008] In one embodiment, the side of the heat conducting part facing the first cavity has a first heat conducting boss, and one end of the first fuse located in the first cavity is wound around the first heat conducting boss;

[0009] The side of the heat conducting part facing the second cavity has a second heat conducting boss opposite to the first heat conducting boss, and one end of the second fuse located in the second cavity is wound around the second heat conducting boss.

[0010] In one embodiment, the side of the heat conducting part facing the first cavity has a groove, and one end of the first fuse located in the first cavity extends into the groove.

[0011] In one embodiment, one side of the heat conducting part facing the second cavity has a heat conducting boss opposite to the groove, and the second fuse is wound around the heat conducting boss at one end of the second cavity.

[0012] In one embodiment, the fuse starting device further includes a heat generating agent, and the heat generating agent is filled in the groove.

[0013] In one embodiment, one end of the first fuse located in the first cavity is coated with a heat generating agent.

[0014] In one embodiment, the fuse starting device further includes a heat generating agent, and the heat generating agent is filled in the first cavity.

[0015] In one embodiment, the housing includes a first housing and a second housing. The first housing has the first cavity and a receiving cavity, and the lead-out hole is formed in the first housing;

[0016] The second housing has an inner sleeve part received in the receiving cavity, and the inner sleeve part has the second cavity;

[0017] The part of the first housing and the inner sleeve part located between the first cavity and the second cavity forms the heat conducting part.

[0018] In one embodiment, the first housing is provided with a first ventilation hole and a second ventilation hole. The first ventilation hole communicates the first cavity and the receiving cavity, and the second ventilation hole communicates the receiving cavity and the outside of the first housing;

[0019] An exhaust passage communicating the first ventilation hole and the second ventilation hole is formed between the inner wall of the receiving cavity and the outer wall of the inner sleeve part.

[0020] A fire extinguisher includes the fuse starting device as described in any one of the above embodiments.

[0021] In the actual use process of the above fuse starting device and the fire extinguisher, when a fire occurs in the protected area, one end of the first fuse arranged in the protected area is ignited, 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 to the second cavity through the heat conducting part, thereby igniting the second fuse, so that the second fuse starts the gas generating agent. After the gas generating agent is started, a large amount of gas is quickly generated, thereby pushing the fire extinguishing agent out of the fire extinguisher, that is, fire extinguishing is achieved.

[0022] In this way, the heat generated by the first fuse in the first cavity is transferred to the second cavity through the heat conduction part, and the second fuse is ignited. Then, the gas generating agent is activated by the second fuse, without directly leading the second fuse out of the second cavity to the protection area, avoiding the leakage of the gas generated by the gas generating agent, which is beneficial to improving the fire extinguishing effect of the fire extinguisher. Description of the Drawings

[0023] Figure 1 Structural schematic diagram of the fuse starting device in an embodiment of the present invention;

[0024] Figure 2 Structural schematic diagram of the fuse starting device in an embodiment of the present invention;

[0025] Figure 3 Structural schematic diagram of the fuse starting device in an embodiment of the present invention;

[0026] Figure 4 Structural schematic diagram of the housing of the fuse starting device in an embodiment of the present invention;

[0027] Figure 5 For application as Figure 4 Structural schematic diagram of the fire extinguisher with the housing of the fuse starting device shown;

[0028] Figure 6 Structural schematic diagram of the fuse starting device in another embodiment of the present invention;

[0029] Figure 7 For application as Figure 6 Structural schematic diagram of the fire extinguisher with the fuse starting device shown;

[0030] Figure 8 Structural schematic diagram of the fuse starting device in yet another embodiment of the present invention;

[0031] Figure 9 For Figure 8 Cross-sectional view of the fuse starting device shown. Detailed Description of the Embodiments

[0032] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following detailed description of the specific embodiments of the present invention will be made with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0033] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0035] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0037] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0038] An embodiment of the present invention provides a fire extinguisher, which includes a fuse starting device for starting the fire extinguisher to spray and extinguish the fire when a fire occurs in a protected area.

[0039] Please refer to Figure 1 As shown, in this embodiment, the fuse starting device 100 includes a housing 10, a first fuse 20 and a second fuse 30. The housing 10 has a first cavity 11, a second cavity 12 and a heat conducting part 13 located between the first cavity 11 and the second cavity 12. The housing 10 also has an outlet hole (not shown in the figure) communicating the first cavity 11 with the outside of the housing 10. One end of the first fuse 20 is disposed in the first cavity 11, and the other end passes through the housing 10 through the outlet hole and is arranged in the protected area. One end of the second fuse 30 is disposed in the second cavity 12, and the other end is used to extend to the gas generating agent 400 to start the gas generating agent 400 when the second fuse 30 is ignited. Optionally, both the first fuse 20 and the second fuse 30 can be thermosensitive wires.

[0040] In the actual use process of the above-mentioned fire extinguisher and the fuse starting device 100, when a fire occurs in the protected area, the end of the first fuse 20 arranged in the protected area is ignited, and the first fuse 20 burns into the first cavity 11 and generates heat. The heat generated by the first fuse 20 in the first cavity 11 is transferred to the second cavity 12 through the heat conducting part 13, thereby igniting the second fuse 30, so that the second fuse 30 starts the gas generating agent 400. After the gas generating agent 400 is started, a large amount of gas is rapidly generated, thereby pushing the fire extinguishing agent out of the fire extinguisher, that is, the fire extinguishing is realized.

[0041] In this way, the heat generated by the first fuse 20 in the first cavity 11 is transferred to the second cavity 12 by using the heat conducting part 13, and the second fuse 30 is ignited, and then the second fuse 30 is used to start the gas generating agent 400. There is no need to directly lead the second fuse 30 from the second cavity 12 to the protected area, avoiding the leakage of the gas generated by the gas generating agent 400, which is beneficial to improving the fire extinguishing effect of the fire extinguisher.

[0042] In one embodiment of the present invention, one end of the first fuse 20 located in the first cavity 11 is coated with a heat-generating agent. Optionally, the heat-generating agent may be a substance that can generate a large amount of heat when heated, such as an aerosol fire extinguishing agent, etc., which is not limited herein.

[0043] Please refer to Figure 9 As shown, in another embodiment of the present invention, the first cavity 11 is filled with a heat-generating agent 40. When the first fuse 20 burns into the first cavity 11, the heat-generating agent 40 is ignited, causing the heat-generating agent 40 to rapidly generate a large amount of heat and transfer it to the second cavity 12, thereby igniting the second fuse 30.

[0044] Please refer to Figure 3 As shown, in an embodiment of the present invention, the side of the heat-conducting part 13 facing the first cavity 11 has a first heat-conducting boss 133, and one end of the first fuse 20 located in the first cavity 11 is wound around the first heat-conducting boss 133. The side of the heat-conducting part 13 facing the second cavity 12 has a second heat-conducting boss 134 opposite to the first heat-conducting boss 133. One end of the second fuse 30 located in the second cavity 12 is wound around the second heat-conducting boss 134. In this way, the first heat-conducting boss 133 and the second heat-conducting boss 134 are designed on the opposite sides of the heat-conducting part 13. On the one hand, it is convenient to wind and fix the first fuse 20 and the second fuse 30; on the other hand, it is beneficial to increase the heat-conducting area of the first fuse 20 and the second fuse 30, so that the heat generated by the burning of the first fuse 20 can be concentrated and transferred to the first heat-conducting boss 133 and the second heat-conducting boss 134, and quickly transferred to the second fuse 30, improving the heat transfer efficiency and reducing the time to ignite the second fuse 30.

[0045] Please refer to Figure 2 As shown, in an embodiment of the present invention, the side of the heat-conducting part 13 facing the first cavity 11 has a groove 131, and one end of the first fuse 20 located in the first cavity 11 extends into the groove 131. In this way, by arranging one end of the first fuse 20 in the groove 131, the heat generated by the burning of the first fuse 20 can be concentrated in the groove 131 and quickly transferred to the second cavity 12 through the inner wall of the groove 131 to ensure quick and reliable ignition of the second fuse 30.

[0046] Furthermore, the side of the heat-conducting part 13 facing the second cavity 12 has a heat-conducting boss 132 corresponding to the groove 131, and one end of the second fuse 30 located in the second cavity 12 is wound around the heat-conducting boss 132. In this way, the heat generated by the burning of the first fuse 20 accumulates in the groove 131 and is quickly transferred to the heat-conducting boss 132 through the inner wall of the groove 131, and then the second fuse 30 wound around the heat-conducting boss 132 is ignited, further ensuring quick and reliable ignition of the second fuse 30.

[0047] Furthermore, the fuse starting 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, which generates a large amount of heat, which is quickly transferred to the heat conducting boss and ignites the second fuse 30.

[0048] See also Figure 4 and Figure 5 As shown, in one embodiment of the present invention, the housing 10 includes a mounting frame 16, a first barrel 14, a second barrel 15 and a heat conducting plate 13'. The mounting frame 16 has a mounting hole that runs through two opposite sides thereof, one end of the first barrel 14 has a first opening, and the end of the first barrel 14 with the first opening is mounted in the mounting hole from one side of the mounting frame 16. One end of the second barrel 15 has a second opening, and the end of the second barrel 15 with the second opening is mounted in the mounting hole from the other side opposite to the mounting frame 16. The heat conducting plate 13' is disposed between the end of the first barrel 14 with the first opening and the end of the second barrel 15 with the second opening, serving as the above-mentioned heat conducting portion 13.

[0049] The first cylinder 14 and the heat conducting plate 13 ′ are enclosed to form the first cavity 11 , and the second cylinder 15 and the heat conducting plate 13 ′ are enclosed to form the second cavity 12 .

[0050] Specifically in the embodiment, the inner wall of the mounting hole is convexly provided with a protrusion 161, and the protrusion 161 extends along the circumference of the mounting hole. The heat conducting plate 13' is arranged between the protrusion 161 and the end of the first cylinder 14 having the first opening. In this way, when assembling, the heat conducting plate 13' is first placed on the protrusion 161 from one end of the mounting hole, and then the end of the first cylinder 14 having the first opening is installed to the end of the mounting hole, so that the heat conducting plate 13' is pressed between the protrusion 161 and the end of the first cylinder 14 having the first opening. Then, the end of the second cylinder 15 having the second opening is installed to the other end of the mounting hole, so that the end of the second cylinder 15 having 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 arranged between the protrusion 161 and the end of the second cylinder 15 having the second opening, which is not limited here.

[0051] Optionally, one end of the first barrel 14 with the first opening is threadedly connected to the mounting hole. One end of the second barrel 15 with the second opening is threadedly connected to the mounting hole. In this way, the first barrel 14 and the second barrel 15 are assembled with the mounting bracket 16 by threaded connection, which is convenient for assembly and disassembly and reliable for connection.

[0052] Optionally, the heat conducting plate 13 ′ may be made of a metal material with good heat conducting performance, such as a copper sheet or an aluminum sheet.

[0053] See also Figure 5As shown, specifically 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 an ejection port 202 communicating with the inner cavity, and the fire extinguishing agent 300 is accommodated in the inner cavity 201. The fuse starting device 100 is fixedly installed on the housing 200 through the above mounting bracket 16. One end of the housing 10 having the second cavity 12 is located in the inner cavity 201, and one end having the first cavity 11 is located outside the inner cavity 201, and the above lead-out hole is opened in the portion of the housing 10 located outside the inner cavity 201. The gas generating agent 400 is disposed in the second cavity 12. Thus, when a fire occurs, the first fuse 20 is ignited and burns into the first cavity 11, thereby igniting the heat generating agent 40. The heat generated by the heat generating agent 40 is transferred to the second fuse 30 through the heat conducting plate 13' to ignite the second fuse 30, and then the second fuse 30 starts the gas generating agent 400. The activated gas generating agent 400 generates a large amount of gas in the second cavity 12, thereby breaking through the second cavity 12 and entering the inner cavity, and then pushing the fire extinguishing agent 300 in the inner cavity out of the ejection port 202, that is, fire extinguishing is achieved.

[0054] It should be noted that in order to enable the gas generated after the gas generating agent 400 in the second cavity 12 is activated to break through the second cavity 12 and enter the inner cavity 201, in one embodiment, the second cylinder 15 has a bursting port, and the bursting port is covered and sealed by a bursting film. When the air pressure in the second cavity 12 reaches a preset pressure, the bursting film cracks, so that the second cavity 12 communicates with the inner cavity 201 through the bursting port. At this time, the gas in the second cavity 12 enters the inner cavity 201, thereby realizing pushing the fire extinguishing agent 300 in the inner cavity 201 to eject from the ejection port 202. Of course, it is not limited to using the bursting film method to realize the gas in the second cavity 12 entering the inner cavity, and other methods can also be used. For example, the second cylinder 15 is made of plastic material. When the gas generating agent 400 is activated and generates high pressure in the second cavity 12, the second cylinder 15 is damaged, and the fire extinguishing agent 300 in the inner cavity 201 is pushed out.

[0055] It should be noted that the fire extinguishing agent 300 of the present application can adopt fire extinguishing media such as dry powder, water, and perfluoroketone fire extinguishing agent 300, which is not limited herein. The gas generating agent 400 of the present application can adopt substances that can generate a large amount of gas after being heated, such as aerosol fire extinguishing agent 300, which is not limited herein. The heat generating agent 40 of the present application can adopt substances that can generate a large amount of heat after being heated, such as aerosol fire extinguishing agent 300, which is not limited herein.

[0056] Please refer to Figure 6 and Figure 7As shown, 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'. 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 heat conducting plate 13' is disposed between the first section 151 and the second section 152. One end of the first cylinder 14 has a first opening, and the end of the first cylinder 14 with the first opening is threadedly connected into the first section 151. The heat conducting plate 13' and the first cylinder 14 enclose the above-mentioned first cavity 11, and the heat conducting plate 13' and the second section 152 enclose the above-mentioned second cavity 12.

[0057] Further, there is a step 153 between the first section 151 and the second section 152, and the heat conducting plate 13' is located between the step 153 and the end of the first cylinder 14 with the first opening. Thus, during assembly, first, the heat conducting plate 13' is disposed on the step 153 between the first section 151 and the second section 152, then the end of the first cylinder 14 with the first opening is threadedly connected into the first section 151, and the heat conducting plate 13' is pressed between the step 153 and the end of the first cylinder 14 with the first opening.

[0058] Specifically in the embodiment, the fire extinguisher further includes a housing 200, a fire extinguishing agent 300, and a gas generating agent 400. An explosion relief member 204 is disposed inside the housing 200, and the explosion relief member 204 divides the inner cavity of the housing 200 into a first accommodation cavity 201a and a second accommodation cavity 201b. The housing 200 has an ejection port 202 communicating with the second accommodation cavity 201b, and the fire extinguishing agent 300 is accommodated in the second accommodation cavity 201b. The fuse starting device 100 is installed on the housing 200, and the end of the housing 10 with the second cavity 12 is located inside the first accommodation cavity 201a, and the end with the first cavity 11 is located outside the housing 200. The above-mentioned lead hole is opened in the part of the housing 10 located outside the housing 200, and the gas generating agent 400 is disposed in the first accommodation cavity 201a.

[0059] Thus, when a fire occurs, the first fuse 20 is ignited. The first fuse 20 burns into the first cavity 11 and ignites the heat generating agent 40. The heat generated by the burning of the heat generating agent 40 is transferred to the second fuse 30 in the second cavity 12 through the heat conducting plate 13', so that 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, causing the air pressure in the first accommodation cavity 201a to increase and break the explosion relief member 204. At this time, the gas in the first accommodation cavity 201a enters the second accommodation cavity 201b and ejects the fire extinguishing agent 300 from the ejection port 202.

[0060] Please refer to Figure 8 and Figure 9As shown in the figure, 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 above-mentioned first cavity 11 and a receiving cavity (not labeled in the figure), and the above-mentioned lead-out hole is opened on the first housing 17.

[0061] 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 portions of the first housing 17 and the inner sleeve portion 181 between the first cavity 11 and the second cavity 12 form a 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. The first cavity 11 is filled with a heat-generating agent 40. One end of the second fuse 30 is located in the second cavity 12, and the other end is used to connect with a gas-generating agent 400.

[0062] In this way, when a fire occurs, the first fuse 20 is ignited and burns into the first cavity 11, thereby igniting the heat-generating agent 40 in the first cavity 11. The ignited heat-generating agent 40 quickly generates a large amount of heat, and the generated heat is quickly transferred to the second cavity 12 of the second housing 18, thereby igniting the second fuse 30 in the second cavity 12 and causing the second fuse 30 to activate the gas-generating agent 400.

[0063] Specifically in the embodiment, the first housing 17 is provided with a first ventilation hole 171 and a second ventilation hole 172. The first ventilation hole 171 communicates the first cavity 11 and the receiving cavity, and the second ventilation hole 172 communicates the receiving cavity and the outside of the first housing 17. An exhaust passage communicating the first ventilation hole 171 and the second ventilation hole 172 is formed between the inner wall of the receiving cavity and the outer wall of the inner sleeve portion 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 ventilation hole 171 and then is discharged to the outside of the first housing 17 from the second ventilation hole 172.

[0064] It should be noted that 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 receiving cavity and the outer wall of the inner sleeve portion 181, so that the heat is transferred from the outer wall of the inner sleeve portion 181 to the second cavity 12 inside the inner sleeve portion 181, thereby igniting the second fuse 30. That is to say, the heat generated by the heat-generating agent 40 is transferred to the second cavity 12 through the heat conduction portion 13 on the one hand, and on the other hand, it is brought into the exhaust passage between the outer wall of the inner sleeve portion 181 and the inner wall of the receiving cavity by the air flow, and is transferred from the outer wall of the inner sleeve portion 181 to the second cavity 12 inside the inner sleeve portion 181.

[0065] Further, the inner sleeve portion 181 of the second housing 18 is made of a heat-conducting material, so that the heat carried by the air flow can be quickly transferred to the second cavity 12 inside the inner sleeve portion 181. Optionally, the material of the inner sleeve portion 181 of the second housing 18 is copper, copper alloy, aluminum, aluminum alloy, etc., as long as the heat-conducting requirements can be met, and no limitation is made here.

[0066] Specifically in the embodiment, the fire extinguisher further includes a housing, a fire extinguishing agent and a gas-generating agent. An explosion-relief member is provided inside the housing, and the explosion-relief member divides the inner cavity of the housing into a first accommodation cavity and a second accommodation cavity. The housing has an ejection port communicating with the second accommodation cavity, and the fire extinguishing agent is accommodated in the second accommodation cavity. The fuse starting device 100 is installed on the housing, and the second cavity 12 of the housing 10 communicates with the first accommodation cavity. One end of the housing 10 having the first cavity 11 is located outside the housing, and the lead-out hole is opened in the portion of the housing 10 located outside the housing, and the gas-generating agent is provided in the first accommodation cavity.

[0067] In this way, when a fire occurs, the first fuse 20 is ignited. The first fuse 20 burns into the first cavity 11, igniting the heat-generating agent 40. The heat generated by the burning of the heat-generating agent 40 is transferred to the second fuse 30 in the second cavity 12, so that the second fuse 30 is ignited to start the gas-generating agent. The gas-generating agent quickly generates a large amount of gas, causing the air pressure in the first accommodation cavity to increase and damaging the explosion-relief member. At this time, the gas in the first accommodation cavity enters the second accommodation cavity and ejects the fire extinguishing agent from the ejection port.

[0068] Further, the second housing 18 further has an outer sleeve portion 182 connected to the inner sleeve portion 181. The outer sleeve portion 182 has an opening 1821 communicating with the second cavity 12. The outer sleeve portion 182 is fixedly connected to the housing, and the second cavity 12 communicates with the first accommodation 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 accommodation cavity through the opening 1821 and connected to the gas-generating agent in the first accommodation cavity, so that after the second fuse 30 is ignited, it can quickly burn into the first accommodation cavity, thereby starting the gas-generating agent. Optionally, the outer sleeve portion is threadedly connected to the housing.

[0069] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0070] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A fuse starting device, characterized in that, Comprising: A housing having a first cavity, a second cavity, and a heat conducting portion located between the first cavity and the second cavity. The housing is provided with a lead-out hole communicating with the first cavity. The housing further includes a first housing and a second housing. The first housing has a receiving cavity, and the second housing has an inner sleeve portion received in the receiving cavity. The first housing is provided with a first vent hole and a second vent hole. The first vent hole communicates the first cavity and the receiving cavity, and the second vent hole communicates the receiving cavity and the outside of the first housing. An exhaust passage communicating the first vent hole and the second vent hole is formed between the inner wall of the receiving cavity and the outer wall of the inner sleeve portion; A first fuse, one end of which penetrates into the first cavity through the lead-out hole, and the other end is arranged in a protection area. The end of the first fuse located in the first cavity is coated with a heat generating agent; and A second fuse, one end of which is arranged in the second cavity, and the other end is used to extend to a gas generating agent.

2. The fuse starting device according to claim 1, characterized in that, The side of the heat conducting portion facing the first cavity has a first heat conducting boss, and the end of the first fuse located in the first cavity is wound around the first heat conducting boss; The side of the heat conducting portion facing the second cavity has a second heat conducting boss opposite to the first heat conducting boss, and the end of the second fuse located in the second cavity is wound around the second heat conducting boss.

3. The fuse starting device according to claim 1, characterized in that, The side of the heat conducting portion facing the first cavity has a groove, and the end of the first fuse located in the first cavity extends into the groove.

4. The fuse activation device according to claim 3, characterized in that, The side of the heat conducting portion facing the second cavity has a heat conducting boss opposite to the groove, and the end of the second fuse located in the second cavity is wound around the heat conducting boss.

5. The fuse starting device according to claim 3, characterized in that, The fuse starting device further includes a heat generating agent filled in the groove.

6. The fuse starting device according to claim 1, wherein The fuse starting device further includes a heat generating agent filled in the first cavity.

7. The fuse starting device according to claim 6, characterized in that, The first housing has the first cavity, and the lead-out hole is opened in the first housing; The inner sleeve portion has the second cavity; The portion of the first housing and the inner sleeve portion located between the first cavity and the second cavity forms the heat conducting portion.

8. A fire extinguisher, characterized in that, Comprising the fuse starting device according to any one of claims 1 to 7.

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