High temperature self-starting fire extinguishing device

Abstract

The utility model discloses a high temperature self -starting fire extinguishing device, including casing, cartridge and electronic ignition head, one end of casing is provided with spout, cartridge is installed in casing, cartridge's ignition end surface faces spout one side, electronic ignition head is installed on cartridge's ignition end surface, the wire of electronic ignition head is worn out casing, still be provided with heat -sensitive medicament on cartridge's ignition end surface, the ignition point of heat -sensitive medicament is lower than the ignition point of aerosol generating agent in cartridge. When electronic ignition head failure, heat -sensitive medicament can start and ignite the starting surface of cartridge before aerosol generating agent cartridge deflagration, thereby reduce the explosion risk.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguishing device technology, and in particular to a high-temperature self-starting fire extinguishing device. Background Technology

[0002] Thermal aerosol fire extinguishing devices are widely used due to their high extinguishing efficiency, small size, and environmental friendliness. To ensure the aerosol generator propellant column burns layer by layer, manufacturers typically use materials such as silicone, rubber, or plastic to create a protective sleeve that wraps around the side surface of the aerosol generator, forming a column. This prevents the flame at the ignition end of the aerosol generator propellant column from igniting the side wall, which would cause a sudden increase in the aerosol generator's activation surface, leading to an increase in gas production and a sharp rise in internal pressure within the fire extinguishing device.

[0003] However, when fire extinguishing devices are in a fire, there are bound to be instances where the starting harness fails to start, or the controller or detector malfunctions, resulting in the fire extinguishing device not starting normally. As the overall temperature of the fire extinguishing device gradually rises in the fire, when the temperature reaches the activation temperature of the aerosol generator, the heated surface of the aerosol generator column, that is, the side or circumference of the column, will suddenly burn and produce gas. If the surface that first reaches the preset temperature is the non-activation surface, and the activation surface is the ignition end of the column, it will cause the coating layer to fail, resulting in a deflagration of the fire extinguishing device.

[0004] Chinese patent document CN221332593U, published on July 16, 2024, discloses a reliable fire extinguishing device, including a housing, a nozzle, an ignition pack, and an electronic ignition head. The housing is a hollow structure; a refrigerant is embedded in the upper part of the housing; at least two longitudinally distributed explosive columns are arranged in the lower part of the housing, each containing an aerosol generator; an ignition pack is installed on each of the at least two explosive columns, each containing a fire extinguishing agent; the electronic ignition head is located in any one of the ignition packs, and its wire extends outward through the housing; the nozzle is connected to the housing. Its features include: the fire extinguishing device effectively reduces the safety risks of explosion or flashover during activation; the ignition packs on at least two explosive columns reduce the ignition delay time of different explosive columns and improve the ignition efficiency of the explosive columns. Its drawback is that when the electronic ignition head fails, the side of the aerosol generator column may explode due to continuous heating as the flame burns, posing a risk of explosion to the fire extinguishing device. Utility Model Content

[0005] The purpose of this invention is to provide a high-temperature self-starting fire extinguishing device. The ignition point of the heat-sensitive agent is lower than that of the aerosol generator in the aerosol generator column, thereby enabling the ignition surface of the aerosol generator column to be activated before the column explodes, reducing the risk of explosion.

[0006] To achieve the above objectives, this utility model provides a high-temperature self-starting fire extinguishing device, comprising a shell, a propellant column, and an electronic ignition head. One end of the shell is provided with a nozzle, the propellant column is installed inside the shell, and the ignition end face of the propellant column faces the nozzle side. The electronic ignition head is installed on the ignition end face of the propellant column, and the wire of the electronic ignition head passes through the shell. A heat-sensitive agent is also provided on the ignition end face of the propellant column, and the ignition point of the heat-sensitive agent is lower than the ignition point of the aerosol generator inside the propellant column.

[0007] The heat-sensitive agent is in granular form.

[0008] The heat-sensitive agent is in block form.

[0009] The thermosensitive agent is in the form of a circular block. The bottom of the thermosensitive agent is provided with a placement groove and a channel that radially connects to the placement groove. The placement groove is used to accommodate the electronic ignition head, and the channel is used for wires to pass through.

[0010] The placement slot is through which the heat-sensitive agent is placed.

[0011] The outer circumference of the heat-sensitive agent is in contact with the inner wall of the shell.

[0012] The upper end of the outer circumference of the thermosensitive agent is provided with a flange, the outer circumference of which contacts the inner wall of the shell, and the lower end of the thermosensitive agent is inserted into the drug column.

[0013] The edge of the thermosensitive agent that contacts the inner wall of the shell has multiple notches. The shell is also filled with refrigerant, which is located between the nozzle and the drug column. The refrigerant is also encased in a cylinder with a protrusion at the lower end. The protrusion passes through the notches on the thermosensitive agent and abuts against the drug column.

[0014] Compared with the prior art, this utility model has the following technical effects:

[0015] 1. The ignition point of the heat-sensitive agent of this utility model is lower than that of the aerosol generator in the propellant column. When the electronic ignition head fails, it can start the ignition surface of the propellant column before the aerosol generator propellant column explodes, thereby reducing the risk of explosion.

[0016] 2. The outer circumference of the heat-sensitive agent of this utility model is in contact with the inner wall of the shell, so that the heat-sensitive agent is heated faster, thereby improving the activation speed of the fire extinguishing device when the electronic ignition head fails. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a cross-sectional structural diagram of one embodiment of the present utility model.

[0019] Figure 2 This is a cross-sectional structural diagram of another embodiment of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the heat-sensitive agent of this utility model.

[0021] Figure 4 A three-dimensional structural diagram showing the flange and notch of the thermosensitive agent of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the thermosensitive agent of this utility model from the top view.

[0023] Figure 6 This is a three-dimensional structural diagram of the cylindrical body of this utility model.

[0024] Figure label:

[0025] 10 housing, 11 nozzle, 12 outlet.

[0026] 20 catalytic column, 21 protective sleeve, 22 aerosol generator;

[0027] Refrigerant 30, cylinder 31, extension 32

[0028] Electronic ignition head 40, wire 41,

[0029] Heat-sensitive agent 50, placement groove 51, flange 52, channel 53, notch 54. Detailed Implementation

[0030] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0031] Example 1:

[0032] See Figure 1 , 2 A high-temperature self-starting fire extinguishing device includes a housing 10, a propellant 20, a refrigerant 30, and an electronic ignition head 40. One end of the housing 10 is provided with a nozzle 11, and the housing 10 also has an outlet 12. The housing 10 is filled with refrigerant 30 at the end located near the nozzle 11, and the propellant 20 is installed at the end of the housing 10 away from the nozzle 11. The electronic ignition head 40 is installed on the ignition end face of the propellant 20. The housing 10 is also filled with refrigerant 30, which is located between the nozzle 11 and the propellant 20. A wire 41 of the electronic ignition head 40 passes through the outlet 12. A heat-sensitive agent 50 is also installed on the ignition end face of the propellant 20, and the ignition point of the heat-sensitive agent 50 is lower than the ignition point of the aerosol generator inside the propellant 20.

[0033] Since the ignition point of the heat-sensitive agent 40 is lower than that of the aerosol generator in the propellant column 20, it can activate the ignition surface of the propellant column before the aerosol generator propellant column explodes when the electronic ignition head fails, thus reducing the risk of explosion.

[0034] Specifically, the ignition point of the agent on the electronic ignition head 40 is above 300°C, and the ignition point of the aerosol generator in the propellant column 20 is between 300°C and 400°C. In this embodiment, the ignition point of the heat-sensitive agent 50 is between 120°C and 190°C. In this embodiment, the heat-sensitive agent 50 adopts existing technology, for example, the heat-sensitive agent module disclosed in Chinese patent document CN222341853U can be used.

[0035] See Figure 1 , 2 The electronic ignition head 40 and the heat-sensitive agent 50 are both located between the propellant column 20 and the refrigerant 30, that is, on the starting surface of the propellant column 20.

[0036] In this embodiment, the heat-sensitive agent 50 is in granular form.

[0037] Example 2:

[0038] The difference between this embodiment and Embodiment 1 is that the heat-sensitive agent 50 is in block form. The heat-sensitive agent 50 can be in cube or round shape. The heat-sensitive agent 50 is filled between the drug column 20 and the refrigerant 30.

[0039] Example 3:

[0040] Based on Example 2, see Figure 3 The heat-sensitive agent 50 is in the shape of a round block. The bottom of the heat-sensitive agent 50 is provided with a placement groove 51 and a channel 53 that is radially connected to the placement groove 51. The placement groove 51 is used to accommodate the electronic ignition head 40, and the channel 53 is used for the wire 41 to pass through.

[0041] Specifically, see Figure 2 The heat-sensitive agent 50 is located on the upper side of the electronic ignition head 40. The electronic ignition head 40 has a certain volume and is located in the placement slot 51, which makes the installation of the heat-sensitive agent 50 more stable. The channel 53 provides space for the wire 41 to pass through.

[0042] Furthermore, the placement groove 51 penetrates the heat-sensitive agent 50, making the heat-sensitive agent 50 form a ring shape. This reduces the obstruction to aerosol release when the heat-sensitive agent 50 has not completely burned out but has already ignited the aerosol generator in the propellant column 20.

[0043] Example 4:

[0044] Based on Example 3, the outer circumference of the heat-sensitive agent 50 contacts the inner wall of the housing 10, thereby allowing the heat-sensitive agent 50 to be heated more quickly, thus improving the activation speed of the fire extinguishing device when the electronic ignition head fails.

[0045] In this embodiment, the housing 10 is made of metal.

[0046] Further, see Figure 3 The upper end of the outer circumference of the heat-sensitive agent 50 is provided with a flange 52, which is combined with Figure 2 The outer circumference of the flange 52 contacts the inner wall of the housing 10, and the lower end of the heat-sensitive agent 50 is inserted into the drug column 20.

[0047] Specifically, the drug column 20 includes a protective sleeve 21 and an aerosol generator 22 filled in the protective sleeve 21. The height of the aerosol generator does not exceed the upper end face of the protective sleeve 21, so that the upper end face of the protective sleeve 21 still has a certain depth space. The lower end of the heat-sensitive agent 50 is inserted into the upper end face of the protective sleeve 21 to fix the heat-sensitive agent 50 and facilitate the installation of the heat-sensitive agent 50.

[0048] Further, see Figure 4 , 5 6. The edge of the heat-sensitive agent 50 that contacts the inner wall of the housing 10 has multiple notches 54. The refrigerant 30 is also fitted with a cylinder 31. The lower end of the cylinder 31 has a protrusion 32 that passes through the notches 54 on the heat-sensitive agent 50 and abuts against the protective sleeve 21 of the propellant 20. With the above structure, the refrigerant 30 can be prevented from squeezing the flange 52 of the heat-sensitive agent 50, which could cause the flange 52 to break and affect the ignition of the propellant 20.

[0049] The method of use or principle of this utility model:

[0050] When the electronic ignition head fails, the fire extinguishing device fails to start normally. The overall temperature of the fire extinguishing device in the fire scene gradually rises. When the temperature reaches the ignition point of the heat-sensitive agent 50, since the ignition point of the heat-sensitive agent 40 is lower than the ignition point of the aerosol generator in the aerosol generator 20, the ignition surface of the aerosol generator 20 can be activated before the aerosol generator 20 explodes, thus reducing the risk of explosion.

Claims

1. A high-temperature self-starting fire extinguishing device, comprising a housing (10), a propellant column (20), and an electronic ignition head (40), wherein a nozzle (11) is provided at one end of the housing (10), the propellant column (20) is installed inside the housing (10), the ignition end face of the propellant column (20) faces the nozzle (11), the electronic ignition head (40) is installed on the ignition end face of the propellant column (20), and the wire (41) of the electronic ignition head (40) extends out of the housing (10), characterized in that: The ignition end face of the propellant column (20) is also provided with a heat-sensitive agent (50), the ignition point of which is lower than that of the aerosol generator in the propellant column (20).

2. The high-temperature self-starting fire extinguishing device according to claim 1, characterized in that: The heat-sensitive agent (50) is in granular form.

3. The high-temperature self-starting fire extinguishing device according to claim 1, characterized in that: The heat-sensitive agent (50) is in block form.

4. The high-temperature self-starting fire extinguishing device according to claim 3, characterized in that: The thermosensitive agent (50) is a circular block. The bottom of the thermosensitive agent (50) is provided with a placement groove (51) and a channel (53) that radially connects to the placement groove (51). The placement groove (51) is used to accommodate the electronic ignition head (40), and the channel (53) is used for the wire (41) to pass through.

5. The high-temperature self-starting fire extinguishing device according to claim 4, characterized in that: The placement slot (51) passes through the heat-sensitive agent (50).

6. The high-temperature self-starting fire extinguishing device according to claim 4, characterized in that: The outer circumference of the heat-sensitive agent (50) is in contact with the inner wall of the shell (10).

7. The high-temperature self-starting fire extinguishing device according to claim 6, characterized in that: The upper end of the outer circumference of the thermosensitive agent (50) is provided with a flange (52), the outer circumference of the flange (52) is in contact with the inner wall of the shell (10), and the lower end of the thermosensitive agent (50) is inserted into the drug column (20).

8. The high-temperature self-starting fire extinguishing device according to claim 6 or 7, characterized in that: The edge of the thermosensitive agent (50) in contact with the inner wall of the shell (10) is provided with multiple notches (54). The shell (10) is also filled with refrigerant (30). The refrigerant (30) is located between the nozzle (11) and the drug column (20). The refrigerant (30) is also fitted with a cylinder (31). The lower end of the cylinder (31) is provided with an extension (32). The extension (32) passes through the notch (54) on the thermosensitive agent (50) and abuts against the drug column (20).

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