Thermal wire safety protection structure, thermal wire assembly and fire extinguishing device

Abstract

The present invention relates to a thermal wire safety protection structure, a thermal wire assembly and a fire extinguishing device. The thermal wire safety protection structure includes a fire-blocking shell, provided with a connection port, an exhaust port and a flame extinguishing channel connecting the connection port and the exhaust port, wherein the connection port is used to mate with one end of the thermal wire, and the exhaust port is connected to the outside of the fire-blocking shell; and a flame extinguishing structure is provided in the flame extinguishing channel and is used to extinguish the flame in the flame extinguishing channel. The thermal wire safety protection structure, the thermal wire assembly and the fire extinguishing device provided by the present invention, when the thermal wire is ignited, the flame will meet the flame extinguishing structure in the fire-blocking channel, and the flame extinguishing structure can extinguish the flame in the flame channel, thereby improving the safety of the thermal wire when used in a flammable gas environment.

Description

Technical Field

[0001] The present invention relates to the field of fire protection technology, and in particular to a thermal wire safety protection structure, a thermal wire assembly and a fire extinguishing device. Background Art

[0002] Thermistor wires are mainly used in conjunction with fire-fighting equipment. When the ambient temperature reaches the thermistor wire activation temperature, or the thermistor wire is ignited by an open flame, the thermistor wire safety protection structure can be activated to extinguish the fire. It is widely used in automatic fire extinguishing in various places.

[0003] The current thermal wire consists of a thermal wire core and a fireproof sleeve. The fireproof sleeve is wrapped around the outside of the thermal wire core. When the thermal wire core is ignited, it will burn inside the fireproof sleeve, and the burning sparks and high temperature will not affect other objects in the environment.

[0004] However, when thermistor wires are used in fire extinguishing devices in scenarios where flammable gases are used, there is a huge risk of igniting and detonating the flammable gases, which seriously threatens the safety of people and property around them. Summary of the invention

[0005] Based on this, it is necessary to provide a thermistor safety protection structure, a thermistor assembly and a fire extinguishing device that can prevent sparks from the thermistor core from igniting or detonating the combustible gas in the combustible gas use scenario, in order to address the huge hidden danger of the existing thermistor igniting or detonating the combustible gas when the thermistor is used in a fire extinguishing device in a combustible gas use scenario.

[0006] In one aspect of the present application, a thermal line safety protection structure is provided, comprising:

[0007] A fire-blocking housing is provided with a connection port, an exhaust port, and a flame extinguishing passage connecting the connection port and the exhaust port, wherein the connection port is used to be matched with one end of the thermal line, and the exhaust port is connected with the outside of the fire-blocking housing; and

[0008] The flame extinguishing structure is arranged in the flame extinguishing channel and is used for extinguishing the flame in the flame extinguishing channel.

[0009] In one embodiment, the flame extinguishing structure comprises a temperature reducing flame extinguishing structure, and the temperature reducing flame extinguishing structure can reduce the flame temperature to extinguish the flame.

[0010] In one embodiment, the temperature reduction and flame extinguishing structure includes a metal heat sink.

[0011] In one of the embodiments, the temperature reduction and flame extinguishing structure comprises a metal grid.

[0012] In one embodiment, the metal mesh is formed by weaving a plurality of metal wires; or

[0013] The metal mesh member is formed by opening holes in the metal member.

[0014] In one embodiment, the metal mesh is in the shape of a column or a sheet.

[0015] In one of the embodiments, when the metal grid member is in sheet form, the metal grid member comprises a plurality of metal grid members, and the plurality of metal grid members are spaced apart along the extension direction of the flame extinguishing channel.

[0016] In one embodiment, the flame extinguishing structure comprises an energy dissipating flame extinguishing structure, which can reduce a free radical reaction that forms a flame to extinguish the flame.

[0017] In one of the embodiments, the energy-consuming flame-extinguishing structure has a plurality of collision surfaces intersecting with the extension direction of the flame-extinguishing channel, and the plurality of collision surfaces are arranged at intervals along the extension direction of the flame-extinguishing channel.

[0018] In one embodiment, the flame extinguishing structure is fixed in the flame extinguishing channel.

[0019] In one embodiment, the thermal line safety protection structure further includes a breathable film, and the breathable film is covered at the exhaust port.

[0020] On the other hand, the present application further provides a thermal wire assembly, including a thermal wire and the thermal wire safety protection structure mentioned above, wherein one end of the thermal wire is connected to the connection port.

[0021] In one embodiment, the thermal wire comprises a fireproof sleeve and a thermal wire core enclosed in the fireproof sleeve, the fireproof shell has a connecting end, the connecting port is arranged at the connecting end, and one end of the fireproof sleeve facing the thermal wire safety protection structure is connected to the connecting end by interference fit; and / or

[0022] One end of the fireproof sleeve facing the heat-sensitive wire safety protection structure is bonded to the connecting end; and / or

[0023] One end of the fireproof cover facing the thermal line safety protection structure is sleeved on the connection end, and the fire extinguishing device also includes a locking piece, which cooperates with the outside of the fireproof cover to provide a locking force for the fireproof cover to fit tightly against the connection end.

[0024] In one of the embodiments, when one end of the fireproof sleeve facing the thermal wire safety protection structure is sleeved on the connection end, the thermal wire assembly further comprises a locking member, and the locking member cooperates with the exterior of the fireproof sleeve to provide a locking force for the fireproof sleeve to be tightly attached to the connection end;

[0025] Wherein, the fire-blocking shell is provided with a first clamping portion, and the locking member is provided with a second clamping portion clamped with the first clamping portion.

[0026] In another aspect of the present application, a fire extinguishing device is provided, comprising a device body and the above-mentioned thermal wire assembly, wherein one end of the thermal wire away from the connecting port is connected to the device body.

[0027] The above-mentioned thermal wire safety protection structure, thermal wire assembly and fire extinguishing device connect one end of the thermal wire that exposes the thermal wire core to the thermal wire safety protection structure. When the thermal wire core is ignited and burns to the end toward one side of the thermal wire safety protection structure, the flame will enter the fire-blocking channel through the connecting port and then encounter the flame extinguishing structure arranged in the fire-blocking channel. The flame extinguishing structure can extinguish the flame in the flame channel, thereby preventing the flame from being discharged from the exhaust port and contacting the combustible gas in the external environment, or preventing the flame from entering the flame channel from the exhaust port and further burning with the flame from the thermal wire core, thereby improving the safety of the thermal wire when used in a combustible gas environment.

[0028] In addition, since an exhaust port is provided in the fireproof shell, after the thermal wire core is ignited, the gas in the fireproof sleeve expands due to heat, and the exhaust port can guide the gas to be discharged to the exhaust port without causing the thermal wire to explode. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a fire extinguishing device in one embodiment of the present invention;

[0030] Figure 2 A schematic cross-sectional view of a thermal line safety protection structure in one embodiment of the present invention;

[0031] Figure 3 FIG. 4 is a schematic cross-sectional structure diagram of a thermal line safety protection structure in another embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0039] In addition, the drawings are not drawn to a 1:1 scale, and the relative sizes of the elements in the drawings are drawn only as examples and not necessarily according to the true scale.

[0040] In order to facilitate understanding of the technical solution of the present invention, the existing thermistor is first described before detailed description.

[0041] As mentioned in the background technology, the thermistor is usually composed of a thermistor core and a fireproof sleeve. One end of the thermistor is located outside the fire extinguishing device body and is used to respond to the external ambient temperature. The other end of the thermistor is connected to the fire extinguishing device body and is used to ignite the gas generating agent or fire extinguishing agent therein, thereby starting the fire extinguishing device body to spray fire extinguishing substances to extinguish the fire.

[0042] The fireproof sleeve usually has openings at both ends to expose the thermal wire core. The thermal wire core exposed in the fire extinguishing device body can ignite the gas generating agent or the fire extinguishing agent, and the opening at the end away from the fire extinguishing device body can be used as an exhaust port to release the pressure of the gas expansion in the fireproof sleeve caused by the heat generated during the combustion of the thermal wire core. Therefore, it can prevent the thermal wire from bursting and affecting the function of the thermal wire to start the fire extinguishing device body.

[0043] Therefore, when the fire extinguishing device is used in a scene with flammable gas, there is a possibility that the flammable gas will enter the fireproof sleeve from the opening, or the sparks of the burning thermistor core will enter the external environment from the opening. This will cause the flammable gas to be ignited or even exploded, which will seriously threaten the safety of people and property around.

[0044] Therefore, it is necessary to propose a thermal wire safety protection structure, a thermal wire assembly and a fire extinguishing device that can prevent the spark of the thermal core from igniting and detonating the combustible gas in the combustible gas use scenario.

[0045] Figure 1 A schematic structural diagram of a fire extinguishing device in an embodiment of the present invention is shown; Figure 2 Shows Figure 1 For ease of description, the accompanying drawings only show structures related to the embodiments of the present invention.

[0046] Referring to the accompanying drawings, an embodiment of the present invention provides a thermal wire safety protection structure 100, comprising a fire-retardant housing 10 and a flame extinguishing structure 20. The thermal wire safety protection structure 100 of the present application is applied to a thermal wire 210.

[0047] It can be understood that the heat-sensitive wire 210 includes a fireproof cover 211 and a heat-sensitive wire core 212 wrapped therein, and the heat-sensitive wire core 212 can be ignited in the fireproof cover 211 in response to the external ambient temperature. Further, both ends of the fireproof cover 211 have openings to expose the heat-sensitive wire core 212.

[0048] The fire-blocking housing 10 is provided with a connection port 11, an exhaust port 12, and a flame extinguishing passage 13 connecting the connection port 11 and the exhaust port 12. The connection port 11 is used to mate with one end of the thermal line 210, and the exhaust port 12 is connected to the outside of the fire-blocking housing 10. Specifically, the material of the fire-blocking housing 10 is a fire-blocking material, which can be a metal material. In other embodiments, it can also be coated with a fire-blocking coating. In the embodiment of the present application, the connection port 11 and the exhaust port 12 are provided on two opposite end faces of the fire-blocking housing 10. In other embodiments, the connection port 12 can also be provided on the end face, and the exhaust port 12 can be provided on the non-end face, which is not limited here. The connection port 11 is provided on the end face to facilitate the connection between the thermal line 210 and the connection port 11.

[0049] It can be understood that the connection port 11 is connected to the opening of the fireproof sleeve 211 .

[0050] The flame extinguishing structure 20 is disposed in the flame extinguishing channel 13 and is used to extinguish the flame in the flame channel 13 .

[0051] In this way, by connecting one end of the thermistor 210 exposing the thermistor core 212 to the thermistor safety protection structure 100, when the thermistor core 212 is ignited and burns to the end toward the side of the thermistor safety protection structure 100, the flame will enter the fire-blocking channel 13 through the connecting port 11, and then will be encountered by the flame extinguishing structure 20 arranged in the fire-blocking channel 13, and the flame extinguishing structure 20 can extinguish the flame in the flame channel 13, thereby preventing the flame from being discharged from the exhaust port 12 and contacting the combustible gas in the external environment, or preventing the flame from entering the flame channel 13 from the exhaust port 12 and further burning with the flame from the thermistor core 212, thereby improving the safety of the thermistor 210 when used in a combustible gas environment.

[0052] In addition, since the exhaust port 12 is provided in the fireproof housing 10 , after the thermistor core 212 is ignited, the gas in the fireproof sleeve 211 expands due to the heat, and the exhaust port 12 can guide the gas to be discharged toward the exhaust port 12 without causing the thermistor 210 to burst.

[0053] Please refer again Figure 2Specifically, in the embodiment of the present application, the flame extinguishing structure 20 includes a temperature-reducing flame extinguishing structure, which can reduce the temperature of fireworks to extinguish the flame.

[0054] Those skilled in the art should understand that one of the necessary conditions for combustion is to reach a certain temperature, namely the ignition point. Below the ignition point, combustion will naturally stop. Based on this principle, the inventors have found that as long as the temperature of the flame is reduced so that it cannot reach the ignition point of the combustible gas, the spread of the flame can be prevented and the flame can be eliminated.

[0055] Furthermore, the cooling flame structure includes a metal heat sink. Metal has a good heat conduction effect, so that the concentrated temperature of the flame can be conducted through the metal heat sink, thereby expanding the heat dissipation area and accelerating the cooling effect.

[0056] Specifically in one embodiment, the metal heat sink includes a metal mesh. Due to the presence of the mesh, when the flame passes through many small channels of the metal mesh, it will become a number of small flames, which will enhance the heat conduction and enable the flame temperature to quickly drop below the ignition point, thereby preventing the flame from spreading and extinguishing the flame. Specifically, the metal mesh can be formed by weaving metal wires or by opening holes in a metal part, which is not limited here. However, the metal mesh formed by weaving metal wires has a finer mesh and a better flame extinguishing effect.

[0057] like Figure 2 As shown, more specifically, the metal grid piece can be columnar. In this way, the flame extinguishing structure can be made more compact in the narrow flame extinguishing channel 13, and the flame can continuously pass through countless metal grids, thereby improving the flame extinguishing effect.

[0058] like Figure 3 As shown, in other embodiments, the metal mesh may also be in the form of a sheet. The sheet-shaped metal mesh has a simple structure and low cost. Furthermore, the sheet-shaped metal mesh may include a plurality of sheet-shaped metal meshes, and the plurality of sheet-shaped metal meshes are arranged at intervals along the extension direction of the flame extinguishing channel 13. In this way, the flame can pass through the metal meshes for multiple times, thereby improving the flame extinguishing effect. It should also be pointed out that the number of meshes, mesh size or mesh position of each metal mesh may be different to ensure that the flame can be refined.

[0059] In some other embodiments of the present application, the flame extinguishing structure 20 includes an energy-dissipating flame extinguishing structure, which can reduce the free radical reaction that forms the flame to extinguish the flame.

[0060] The inventors have found that combustion and explosion are not direct reactions between molecules, but are stimulated by external energy, which destroys the molecular bonds and generates activated molecules. The activated molecules split into short-lived but very active free radicals. The free radicals collide with other molecules to generate new products, and also generate new free radicals to continue to react with other molecules. Therefore, reducing the free radical reaction that forms the flame can also eliminate the flame.

[0061] Furthermore, the energy-consuming flame extinguishing structure has a plurality of collision surfaces intersecting with the extension direction of the flame extinguishing channel 13, and the plurality of collision surfaces are arranged at intervals along the extension direction of the flame extinguishing channel 13. In this way, when the burning combustible gas enters the flame extinguishing channel 13, the free radicals collide with the plurality of collision surfaces and dominate, causing the number of free radicals participating in the reaction to decrease sharply, and the reaction cannot continue, that is, the combustion reaction cannot continue to propagate through the thermal line safety protection structure 100, thereby achieving the flame extinguishing effect.

[0062] In some embodiments, in order to ensure that the flame extinguishing structure 20 can stably achieve the flame extinguishing effect, the flame extinguishing structure 20 is fixed in the flame extinguishing channel 13. Of course, in some embodiments, the flame extinguishing structure 20 can also be movably arranged in the flame extinguishing channel 13.

[0063] In some embodiments, in order to prevent excessive external flammable gas from entering the flame extinguishing channel 13 or the flame from being discharged into the external environment, the thermal wire safety protection structure 100 also includes a breathable film, which is covered at the exhaust port 12.

[0064] Please refer again Figure 1 Based on the same inventive concept, the present application also provides a thermal wire assembly 200 , which includes a thermal wire 210 and the thermal wire safety protection structure 100 , wherein one end of the thermal wire 210 is connected to the connection port 11 .

[0065] Specifically, the fireproof housing 10 has a connection end 14, and the connection port 11 is provided at the connection end 14. The end of the fireproof cover 211 facing the heat-sensitive wire safety protection structure 100 is connected to the connection end 14 by interference fit. Specifically, the fireproof cover 211 can be provided at the connection end 14, or can be connected to the connection port 11 by interference fit.

[0066] In other embodiments, the fireproof cover 211 may also be bonded to the connection end 14. Of course, in other embodiments, the connection may be further fixed by bonding after the interference fit.

[0067] In some other embodiments, the fireproof cover 211 is sleeved on the connection end 14 at one end facing the thermal wire safety protection structure 100, and the thermal wire assembly 200 also includes a locking piece 220, which cooperates with the outside of the fireproof cover 211 to provide a locking force that allows the fireproof cover to fit tightly against the connection end 14.

[0068] Furthermore, the connection end 14 is also provided with a first clamping portion 141, and the locking member 220 is provided with a second clamping portion 221 clamped with the first clamping portion 141. Specifically, one of the first clamping portion 141 and the second clamping portion 221 is a buckle, and the other of the first clamping portion 141 and the second clamping portion 221 is a slot clamped with the buckle. In some preferred embodiments, the first clamping portion 141 is provided on a side surface of the connection end 14 facing the locking member 220, and the second clamping portion 221 is provided on a side surface of the locking member 220 facing the connection end 14, so that the clamping operation of the first clamping portion 141 and the second clamping portion 142 is simple.

[0069] In another embodiment, the locking member may also be a slip ring locking member, and in other embodiments, an external threaded portion is provided at the connection end, and the locking member is a nut threadably matched with the external threaded portion. The above connection methods are simple in structure and reliable in connection.

[0070] Please refer again Figure 1 Based on the same inventive concept, the present application also provides a fire extinguishing device 300 , including a device body 310 and the above-mentioned thermal wire assembly 200 , wherein one end of the thermal wire 210 away from the connection port 11 is connected to the device body 310 .

[0071] The thermal wire safety protection structure 100, the thermal wire assembly 200 and the fire extinguishing device 300 provided by the embodiment of the present invention have the following beneficial effects compared with the prior art:

[0072] By connecting one end of the thermistor 210 exposing the thermistor core 212 to the thermistor safety protection structure 100, when the thermistor core 212 is ignited and burns to the end toward the side of the thermistor safety protection structure 100, the flame will enter the fire-blocking channel 13 through the connecting port 11, and then will be encountered by the flame extinguishing structure 20 arranged in the fire-blocking channel 13. The flame extinguishing structure 20 can extinguish the flame in the flame channel 13, thereby preventing the flame from being discharged from the exhaust port 12 and contacting the combustible gas in the external environment, or preventing the flame from entering the flame channel 13 from the exhaust port 12 and further burning with the flame from the thermistor core 212, thereby improving the safety of the thermistor 210 when used in a combustible gas environment.

[0073] In addition, since the exhaust port 12 is provided in the fireproof housing 10 , after the thermistor core 212 is ignited, the gas in the fireproof sleeve 211 expands due to the heat, and the exhaust port 12 can guide the gas to be discharged toward the exhaust port 12 without causing the thermistor 210 to burst.

[0074] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the fire protection scope of the present invention. Therefore, the fire protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. A thermal wire safety protection structure (100), connected to one end of the thermal wire (210), characterized in that: include: A fire-retardant outer shell (10), wherein the material of the fire-retardant outer shell (10) is a fire-retardant material or the fire-retardant outer shell (10) is coated with a fire-retardant coating; the fire-retardant outer shell (10) is provided with a connecting port (11), an exhaust port (12) and a flame extinguishing passage (13) connecting the connecting port (11) and the exhaust port (12), the connecting port (11) is used to be matched with one end of the thermal line (210), and the exhaust port (12) is connected with the outside of the fire-retardant outer shell (10); and The flame extinguishing structure (20) is arranged in the flame extinguishing channel (13) and is used to extinguish the flame in the flame extinguishing channel (13).

2. The thermal line safety protection structure (100) according to claim 1, characterized in that: The flame extinguishing structure (20) comprises a temperature-reducing flame extinguishing structure, which can reduce the flame temperature to extinguish the flame.

3. The thermal line safety protection structure (100) according to claim 2, characterized in that: The temperature reduction and flame extinguishing structure includes a metal heat sink.

4. The thermal line safety protection structure (100) according to claim 3, characterized in that: The temperature reduction and flame extinguishing structure includes a metal grid member.

5. The thermal line safety protection structure (100) according to claim 4, characterized in that: The metal mesh is formed by weaving a plurality of metal wires; or The metal mesh member is formed by opening holes in the metal member.

6. The thermal line safety protection structure (100) according to claim 4, characterized in that: The metal grid is in a column or sheet shape.

7. The thermal line safety protection structure (100) according to claim 6, characterized in that: When the metal grid piece is in sheet form, the metal grid piece comprises a plurality of metal grid pieces, and the plurality of metal grid pieces are arranged at intervals along the extension direction of the flame extinguishing channel (13).

8. The thermal line safety protection structure (100) according to claim 1, characterized in that: The flame extinguishing structure (20) comprises an energy-dissipating flame extinguishing structure, which can reduce the free radical reaction that forms the flame to extinguish the flame.

9. The thermal line safety protection structure (100) according to claim 8, characterized in that: The energy-consuming flame-extinguishing structure has a plurality of collision surfaces intersecting with the extension direction of the flame-extinguishing channel (13), and the plurality of collision surfaces are arranged at intervals along the extension direction of the flame-extinguishing channel (13).

10. The thermal wire safety protection structure (100) according to any one of claims 1 to 9, characterized in that: The flame extinguishing structure (20) is fixed in the flame extinguishing channel (13).

11. The thermal wire safety protection structure (100) according to any one of claims 1 to 9, characterized in that: The heat-sensitive wire safety protection structure (100) further comprises a breathable film, wherein the breathable film is covered at the exhaust port (12).

12. A thermal wire assembly (200), characterized in that: It comprises a thermal wire (210) and a thermal wire safety protection structure (100) as claimed in any one of claims 1 to 11, wherein one end of the thermal wire (210) is connected to the connection port (11).

13. The thermal wire assembly (200) according to claim 12, characterized in that: The heat-sensitive wire (210) comprises a fireproof sleeve (211) and a heat-sensitive wire core (212) enclosed in the fireproof sleeve (211); the fire-resistant outer shell (10) has a connection end; the connection port (11) is arranged at the connection end; and one end of the fireproof sleeve (211) facing the heat-sensitive wire safety protection structure (100) is connected to the connection end by interference fit; and / or One end of the fireproof sleeve (211) facing the heat-sensitive wire safety protection structure (100) is bonded to the connection end; and / or One end of the fireproof cover (211) facing the thermal wire safety protection structure (100) is sleeved on the connection end, and the thermal wire assembly (200) further comprises a locking member, which cooperates with the outside of the fireproof cover (211) to provide a locking force for the fireproof cover (211) to be tightly attached to the connection end.

14. The thermal wire assembly (200) according to claim 13, characterized in that: When one end of the fireproof cover (211) facing the heat-sensitive wire safety protection structure (100) is sleeved on the connection end, the heat-sensitive wire assembly (200) further comprises a locking member, which cooperates with the outside of the fireproof cover (211) to provide a locking force for the fireproof cover (211) to be tightly attached to the connection end; Wherein, the fire-blocking housing (10) is provided with a first clamping portion, and the locking member is provided with a second clamping portion clamped with the first clamping portion.

15. A fire extinguishing device (300), characterized in that: It comprises a device body (310) and a thermal wire assembly (200) as claimed in any one of claims 12 to 14, wherein one end of the thermal wire (210) away from the connection port (11) is connected to the device body (310).

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