CN111617410B - Fire extinguishing equipment - Google Patents

Abstract

The present invention relates to a fire extinguishing device. The fire extinguishing device includes a fire extinguishing container, a spraying component and a liquid coolant. The aerosol fire extinguishing agent and the liquid coolant are both filled in a containing cavity, and the aerosol fire extinguishing agent is in direct contact with the liquid coolant, and the liquid coolant and the aerosol fire extinguishing agent do not chemically react with each other. In the fire extinguishing device provided by the present invention, after the aerosol fire extinguishing agent is ignited, the aerosol fire extinguishing agent generates high-temperature fire extinguishing substances. These high-temperature fire extinguishing substances have a certain initial spraying velocity and are sprayed toward the nozzle along the spraying path. During the spraying process toward the nozzle, the liquid coolant directly contacts the aerosol fire extinguishing agent without passing through the air guide channel and absorbs the heat of the fire extinguishing substance in time. The corresponding high-temperature fire extinguishing substance releases heat to cool down, thereby reducing the temperature of the fire extinguishing substance sprayed from the nozzle. In addition, the liquid coolant has a small resistance to the fire extinguishing substance, and can be sprayed from the nozzle together with the fire extinguishing substance to participate in fire extinguishing without affecting the passing speed of the fire extinguishing substance.

Description

Fire extinguishing equipment

Technical Field

The present invention relates to the technical field of fire fighting, in particular to a fire extinguishing device.

Background technique

Aerosol fire extinguishing agent is a newly developed type of fire extinguishing agent in the field of fire extinguishing. It forms fire extinguishing substances through flame burning of the fuel in the fire extinguishing agent, thereby achieving the purpose of fire extinguishing.

Usually, the temperature of aerosol fire extinguishing agent is very high after being sprayed. The design of traditional fire extinguishing equipment needs to provide a large amount of space for air guide channel and placement of heat-absorbing and cooling materials. Therefore, in the process of aerosol fire extinguishing agent being ignited to form fire extinguishing material and spraying it into the nozzle, the passage speed of the fire extinguishing material is limited, thereby reducing the fire extinguishing efficiency of the aerosol fire extinguishing agent.

Summary of the invention

Based on this, it is necessary to provide a fire extinguishing device with high fire extinguishing efficiency to address the problem that in traditional fire extinguishing devices, the passage speed of the fire extinguishing material is limited during the process of the aerosol fire extinguishing agent being ignited to form the fire extinguishing material and sprayed toward the nozzle, thereby reducing the fire extinguishing efficiency of the aerosol fire extinguishing agent.

One aspect of the present invention provides a fire extinguishing device, comprising:

A fire extinguishing container, having a containing cavity and a nozzle connected to the containing cavity at one end;

an ejection assembly, comprising an ignition element and an aerosol fire extinguishing agent, wherein the aerosol fire extinguishing agent is filled in the accommodating cavity, and the ignition element is used to ignite the aerosol fire extinguishing agent to generate a fire extinguishing substance, so that the fire extinguishing substance is ejected from the ejection port along an ejection path; and

A liquid coolant, the liquid coolant is filled in the containing cavity, the liquid coolant is located on the spraying path, and is in direct contact with the aerosol fire extinguishing agent;

Wherein, the liquid coolant and the aerosol fire extinguishing agent do not chemically react with each other.

In one embodiment, the liquid coolant is configured to absorb heat from the fire extinguishing substance and vaporize from a liquid state to a gaseous state.

In one embodiment, the liquid coolant includes perfluorohexanone.

In one of the embodiments, the aerosol fire extinguishing agent is located at an end of the containing chamber away from the nozzle.

In one embodiment, the fire extinguishing container has a bottom wall and a side wall arranged along the circumference of the bottom wall and connected to the bottom wall, and the bottom wall and the side wall surround and form the accommodating cavity;

The bottom wall and the side wall define a positioning space, and the positioning space is in contact with the outer side of the aerosol fire extinguishing agent to position the aerosol fire extinguishing agent.

In one embodiment, the fire extinguishing device further includes a positioning member, the positioning member is located in the accommodating cavity, the positioning member has an accommodating cavity and a communicating hole, and the accommodating cavity is communicated with the accommodating cavity through the communicating hole;

The aerosol fire extinguishing agent is filled in the accommodating cavity and adheres to the inner wall of the accommodating cavity so as to be positioned in the accommodating cavity.

In one embodiment, the positioning member is an elastic positioning member, and the outer wall of the elastic positioning member abuts against the inner wall of the accommodating cavity so that the elastic positioning member is positioned in the accommodating cavity.

In one embodiment, the aerosol fire extinguishing agent is in the form of powder, granules, flakes or blocks, or any combination thereof.

In one of the embodiments, a pressure relief member is provided at the nozzle, and the pressure relief member is used to connect the accommodating cavity with the outside of the accommodating cavity through the nozzle when the accommodating cavity reaches a preset pressure value.

In one embodiment, the fire extinguishing device further comprises a pipe network, one end of which is connected to the nozzle; or

The fire extinguishing device also includes a spray pipe, one end of which is connected to the spray port, and the other end is connected to the fire extinguishing area.

In the above-mentioned fire extinguishing device, when the ignition part is used to ignite the aerosol fire extinguishing agent, the aerosol fire extinguishing agent generates high-temperature fire extinguishing substances, which have a certain initial ejection velocity and are ejected toward the nozzle along the ejection path. In the process of ejecting toward the nozzle, the liquid coolant directly contacts the aerosol fire extinguishing agent without passing through the air guide channel and absorbs the heat of the fire extinguishing substance in time. The corresponding high-temperature fire extinguishing substance releases heat to cool down, thereby reducing the temperature of the fire extinguishing substance ejected from the nozzle. In addition, the liquid coolant has little resistance to the fire extinguishing substance, and can be ejected from the nozzle together with the fire extinguishing substance to participate in fire extinguishing without affecting the passing speed of the fire extinguishing substance. The fire extinguishing device of the present invention achieves cooling of the fire extinguishing substance while also increasing the ejection speed, thereby improving the fire extinguishing efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic cross-sectional view of a fire extinguishing device in one embodiment of the present invention;

FIG2 is a schematic cross-sectional view of a fire extinguishing device in another embodiment of the present invention;

FIG3 is a schematic cross-sectional view of a fire extinguishing device in another embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view of a fire extinguishing device in yet another embodiment of the present invention.

Detailed ways

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.

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.

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.

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.

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.

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.

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.

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.

Refer to Figure 1, which shows a schematic cross-sectional structure diagram of a fire extinguishing device in an embodiment of the present invention. For ease of description, the accompanying drawings only show structures related to the embodiment of the present invention.

Referring to the drawings, a fire extinguishing device 100 provided in one embodiment of the present invention includes a fire extinguishing container 10 , a spraying assembly 20 and a liquid coolant 30 .

The fire extinguishing container 10 has a accommodating chamber 11, and a nozzle 12 connected to the accommodating chamber 11 is provided at one end. The spraying assembly 20 includes an ignition component 21 and an aerosol fire extinguishing agent 22. The aerosol fire extinguishing agent 22 is filled in the accommodating chamber 11. The ignition component 21 is used to ignite the aerosol fire extinguishing agent 22 to produce a fire extinguishing substance, so that the fire extinguishing substance is sprayed out from the nozzle 12 along the spraying path.

The liquid coolant 30 is filled in the accommodating chamber 11 . The liquid coolant 30 is located on the spraying path and is in direct contact with the aerosol fire extinguishing agent 22 .

The liquid coolant 30 and the aerosol fire extinguishing agent 22 do not chemically react with each other.

It should be understood that since the liquid coolant 30 and the aerosol fire extinguishing agent 22 do not chemically react with each other, direct contact between the two does not affect the characteristics of the aerosol fire extinguishing agent 22 and the liquid coolant 30 themselves. In other words, the aerosol fire extinguishing agent 22 can be normally ignited to produce high-temperature fire extinguishing substances for extinguishing fires, and the liquid coolant 30 can achieve its cooling of the high-temperature fire extinguishing substances.

In this way, when the ignition part 21 is used to ignite the aerosol fire extinguishing agent 22, the aerosol fire extinguishing agent 22 generates high-temperature fire extinguishing substances, which have a certain initial ejection velocity and are ejected toward the nozzle 12 along the ejection path. In the process of ejecting toward the nozzle 12, the liquid coolant 30 directly contacts the aerosol fire extinguishing agent 22 without passing through the air guide channel and absorbs the heat of the fire extinguishing substance in time. The corresponding high-temperature fire extinguishing substance releases heat to cool down, thereby reducing the temperature of the fire extinguishing substance ejected from the nozzle 12. In addition, the liquid coolant 30 has a small resistance to the fire extinguishing substance, and can be ejected from the nozzle 12 together with the fire extinguishing substance to participate in fire extinguishing without affecting the passing speed of the fire extinguishing substance. The fire extinguishing device 100 of the present invention achieves cooling of the fire extinguishing substance while also increasing the ejection speed, thereby improving the fire extinguishing efficiency.

Furthermore, the liquid coolant 30 is configured to absorb the heat of the fire extinguishing substance and vaporize from a liquid state to a gaseous state. As the liquid coolant 30 vaporizes, on the one hand, it can absorb the heat of the fire extinguishing substance and reduce the temperature of the fire extinguishing substance. On the other hand, the gaseous liquid coolant 30 can increase the pressure in the accommodating chamber 11 to increase the ejection speed of the fire extinguishing substance. In addition, if the liquid coolant 30 is ejected when it is in a liquid state, the liquid coolant 30 does not completely absorb the heat, and the fire extinguishing area of the ejection port is limited, so it is difficult to achieve a high utilization rate.

In a preferred embodiment, the liquid coolant 30 includes perfluorohexanone. The boiling point of perfluorohexanone is 49.2 degrees Celsius, so the boiling point is very low. On the one hand, after the aerosol fire extinguishing agent 22 is ignited, a high-temperature fire extinguishing substance is generated. The perfluorohexanone can quickly absorb heat and vaporize. The vaporized gaseous perfluorohexanone also has a fire extinguishing effect and participates in the fire extinguishing together with the fire extinguishing substance. On the other hand, if the aerosol fire extinguishing agent 22 is not burned sufficiently and residues are generated, it is possible to be ejected outward under the impetus of the fire extinguishing substance, but in the process of contacting the liquid perfluorohexanone, the temperature of the residue is reduced and condensed and precipitated or attached to the inner wall of the accommodating cavity 11, thereby further improving the cleanliness of the ejected fire extinguishing substance, so that the fire extinguishing device 100 has the ability to extinguish Class E fire (electrical fire).

In the embodiment of the present invention, the aerosol fire extinguishing agent 22 is in the form of powder, granules, flakes or blocks, or any combination of multiple forms.

Please refer to FIG. 1 again. In some embodiments, the fire extinguishing container 10 is cylindrical. In other embodiments, the fire extinguishing container 10 may also be in other shapes, such as a cone, a rectangular parallelepiped, etc., which is not limited here.

In some embodiments, the fire extinguishing container 10 includes a cylindrical container body and a front cover, which is detachably mounted on one end of the cylindrical container body, wherein the front cover is provided with a nozzle 12. The front cover can be conveniently placed in the accommodating cavity 11 to place the aerosol fire extinguishing agent 22 and the liquid coolant 30.

In some embodiments, the aerosol fire extinguishing agent 22 is located at one end of the accommodating chamber 11 away from the nozzle 12. Specifically, the aerosol fire extinguishing agent 22 and the nozzle 12 can be arranged relative to each other, so that after the aerosol fire extinguishing agent 22 is ignited, it is directly sprayed toward the nozzle 12 along the axial direction of the accommodating chamber 11, avoiding the tortuosity of the spraying path and affecting the spraying speed, and increasing the contact length between the high-temperature fire extinguishing material and the coolant 30 in the spraying path, thereby making full use of the liquid coolant 30 and further reducing the temperature of the fire extinguishing material.

Furthermore, the fire extinguishing container 10 has a bottom wall 13 and a side wall 14 which is arranged circumferentially along the bottom wall 13 and connected to the bottom wall 13. The bottom wall 13 and the side wall 14 surround a receiving cavity 11. The bottom wall 13 and the side wall 14 define a positioning space, which is in contact with the outer side of the aerosol fire extinguishing agent 22 to position the aerosol fire extinguishing agent 22.

In order to improve the combustion efficiency of the aerosol fire extinguishing agent 22, the bottom wall 13 and the side wall 14 are used to define a positioning space for positioning the aerosol fire extinguishing agent 22, which can guide the aerosol fire extinguishing agent 22 to burn layer by layer from the side facing the nozzle 12 to the bottom wall 13 away from the nozzle 12 after being ignited by the ignition piece 21, thereby avoiding multi-directional combustion of the aerosol fire extinguishing agent 22, which may lead to incomplete combustion of the aerosol fire extinguishing agent 22 or excessive residue. In addition, the positioning space can also prevent the fire extinguishing device 100 from being damaged, broken and scattered due to transportation sway or external impact force before use, or the ignition piece 21 may be separated from the aerosol fire extinguishing agent 22, resulting in the failure of the fire extinguishing device 100.

In other embodiments, the fire extinguishing device 100 further includes a positioning member 40, which is located in the accommodating cavity 11. The positioning member 40 has an accommodating cavity 41 and a connecting hole 42. The accommodating cavity 41 is connected to the accommodating cavity 11 through the connecting hole 42. The aerosol fire extinguishing agent 22 is filled in the accommodating cavity 41 and fits with the inner wall of the accommodating cavity 41 to be positioned in the accommodating cavity 41. In this way, after the aerosol fire extinguishing agent 22 is ignited, the positioning member 40 can be used to limit the aerosol fire extinguishing agent 22 to burn fully in the positioning member 40.

Furthermore, the positioning member 40 is an elastic positioning member, and the outer wall of the elastic positioning member abuts against the inner wall of the accommodating cavity 11, so that the elastic positioning member is positioned in the accommodating cavity 11. Specifically, the outer bottom of the elastic positioning member abuts against the bottom wall 13 of the accommodating cavity 11, and the elastic positioning member abuts against the side wall 14 of the accommodating cavity 11 along the circumferential direction, so that the elastic positioning member is positioned in the accommodating cavity 11. The use of the elastic positioning member can not only improve the combustion efficiency of the aerosol fire extinguishing agent 22, but also can buffer the impact force when the fire extinguishing device 100 is subjected to external impact, so as to prevent the aerosol fire extinguishing agent 22 from being damaged, broken and scattered, or the ignition member 21 from being separated from the aerosol fire extinguishing agent 40.

Specifically, the elastic positioning member is made of silicone. In other embodiments, it may also be made of elastic materials such as rubber, which is not limited here.

In some embodiments, the side of the aerosol fire extinguishing agent 22 facing the nozzle 12 is in direct contact with the liquid coolant 30 .

Furthermore, the ignition member 21 includes an ignition end 211 and a connection end 212, wherein the ignition end 211 is located outside the fire extinguishing container 10, and the connection end 212 is in contact with the aerosol fire extinguishing agent 22, wherein the connection end 212 is located on the side of the aerosol fire extinguishing agent 22 facing the nozzle 12. Thus, after the ignition member 21 is ignited, the aerosol fire extinguishing agent 22 produces a fire extinguishing substance, and since the ignition end 211 of the ignition member 21 is located on the side of the aerosol fire extinguishing agent 22 facing the nozzle 12, that is, the ejection path between the aerosol fire extinguishing agent 22 initially ignited by the ignition member 21 and the nozzle 12 is the shortest, and therefore, the fire extinguishing substance can be quickly ejected to the nozzle 12, thereby improving the fire extinguishing speed.

In some embodiments, the ignition element 21 is a heat-sensitive wire. The aerosol fire extinguishing agent 22 can be ignited by igniting the heat-sensitive wire, which facilitates the ignition of the aerosol fire extinguishing agent 22.

In another embodiment, the ignition element 21 may also be an electric initiator.

Specifically, the fire extinguishing device 100 also includes a controller (not shown) and a detector (not shown). The detector is used to detect fire and send a fire signal to the controller. One end of the electric initiator extends into the accommodating chamber 11. The controller is used to control the electric initiator to ignite the aerosol fire extinguishing agent 22. More specifically, the controller can be an industrial computer, a PLC controller or an MCU controller. The detector can be a temperature-sensing detector. The temperature-sensing detector can detect the occurrence of a fire by sensing the temperature. The fire signal is a temperature abnormality signal. When the temperature-sensing detector senses the temperature abnormality, the temperature abnormality signal is sent to the controller, and the controller controls the electric initiator to start, so that the electric initiator ignites the aerosol fire extinguishing agent 22.

As shown in FIG2 , in other embodiments, the electric initiator may also include a start button 213, a piezoelectric ceramic 214 and a high-voltage wire 215. By pressing the start button 213, the piezoelectric ceramic 214 is pressurized to generate a voltage in the high-voltage wire 215 to ignite the aerosol fire extinguishing agent 22. Further, the fire extinguishing container 100 also includes a safety pin 50 and a safety pull ring 60. The safety pull ring 60 is connected to the safety pin 50. The safety pin 50 includes a locking position and an unlocking position. When the safety pin 50 is in the locking position, the safety pin 50 abuts against the start button 213 to limit the start button 213 from moving toward the piezoelectric ceramic. When the safety pin 50 is in the unlocking position, the safety pull ring 60 pulls the safety pin 50 to separate from the start button 213. This method can be applied to a portable fire extinguishing device 100.

In other embodiments, the detector may also be a smoke detector. The smoke detector can detect the occurrence of a fire by sensing the smoke concentration. The fire signal is a smoke concentration abnormality signal. When the temperature detector senses that the smoke concentration is abnormal, the smoke concentration abnormality signal is sent to the controller, and the controller controls the electric initiator to start, so that the electric initiator ignites the aerosol fire extinguishing agent 22. The detector may also be a combustible gas detector. The smoke detector can detect the occurrence of a fire by sensing the combustible gas concentration. The fire signal is a combustible gas concentration abnormality signal. When the temperature detector senses that the combustible gas concentration is abnormal, the combustible gas concentration abnormality signal is sent to the controller, and the controller controls the electric initiator to start, so that the electric initiator ignites the aerosol fire extinguishing agent 22.

Please refer to FIG. 1 again. In some embodiments, the fire extinguishing device 100 further includes a pressure relief member 70. The pressure relief member 70 is used to connect the accommodating chamber 11 with the outside of the accommodating chamber 11 through the nozzle 12 when the accommodating chamber 11 reaches a preset pressure value. In this way, the use of the pressure relief member 70 can, on the one hand, make the accommodating chamber 11 in a sealed state, thereby protecting the liquid coolant 30 and the aerosol fire extinguishing agent 22 from the external environment and extending their service life. Secondly, the pressure relief member 70 can hold a certain pressure on the liquid coolant 30 and the fire extinguishing substance before they are ejected from the nozzle 12, thereby increasing the initial velocity of the liquid coolant 30 and the fire extinguishing substance ejected from the nozzle 12.

Specifically, the pressure relief member 70 may be a sticker, a pressure relief valve, a pressure relief diaphragm or an aluminum film.

In a specific embodiment, the pressure relief member 70 is a sticker, such as a plastic sticker or adhesive tape. The sticker may be provided with a scratch. When the pressure of the accommodating cavity 11 is greater than or equal to a preset pressure value, the sticker ruptures under the pressure, and the liquid coolant 30 and the fire extinguishing material in the accommodating cavity 11 are ejected outward through the rupture of the sticker.

In another embodiment, the pressure relief member 70 is a pressure relief valve, and when the pressure in the accommodating chamber 11 is less than a preset pressure value, the pressure relief valve is closed. When the pressure in the accommodating chamber 11 is greater than or equal to the preset pressure value, the pressure relief valve is turned on, and the liquid coolant 30 and the fire extinguishing material in the accommodating chamber 11 are ejected outward through the pressure relief valve.

In another embodiment, the pressure relief member 70 is a pressure relief diaphragm, and when the pressure in the accommodating chamber 11 is greater than or equal to a preset pressure value, the pressure relief diaphragm ruptures. Further, at least one indentation is formed on the pressure relief diaphragm, and when the pressure in the accommodating chamber 11 is greater than or equal to a preset pressure value, the pressure relief diaphragm ruptures along the indentation, and the liquid coolant 30 and the fire extinguishing substance in the accommodating chamber 11 are ejected outward through the rupture of the pressure relief diaphragm.

Furthermore, when the pressure relief member 70 can be a sticker, a pressure relief diaphragm or an aluminum film, the front cover and the container body can be used to cooperate to complete the fixation of the pressure relief member 70 relative to the fire extinguishing container 10.

As shown in Fig. 3, the fire extinguishing device 100 further includes a pipe network 80, one end of which is connected to the nozzle 12. By providing the pipe network 80, the fire extinguishing substance and the liquid coolant 30 sprayed from the nozzle 12 can be dispersedly introduced into the fire extinguishing area from the network opening of the pipe network 80 in a more guided manner, which is beneficial to improving the fire extinguishing ability of the fire extinguishing agent and enhancing the fire extinguishing effect.

As shown in FIG4 , in other embodiments, the fire extinguishing device 100 further includes a spray pipe 90, one end of which is connected to the nozzle 12, and the other end of which is connected to the fire extinguishing area 200. In this way, the fire extinguishing material and the liquid coolant 30 sprayed from the nozzle 12 can be guided by the spray pipe 90 to spray to the fire extinguishing area 200, so as to enhance the fire extinguishing capability of a certain fire extinguishing area 200.

In the fire extinguishing device 100 of the present invention, when the ignition part 21 is used to ignite the aerosol fire extinguishing agent 22, the aerosol fire extinguishing agent 22 generates high-temperature fire extinguishing substances, which have a certain initial ejection velocity and are ejected toward the nozzle 12 along the ejection path. In the process of ejecting toward the nozzle 12, the liquid coolant 30 directly contacts the aerosol fire extinguishing agent 22 without passing through the air guide channel and absorbs the heat of the fire extinguishing substance in time. The corresponding high-temperature fire extinguishing substance releases heat to cool down, thereby reducing the temperature of the fire extinguishing substance ejected from the nozzle 12. In addition, the liquid coolant 30 has a small resistance to the fire extinguishing substance, and can be ejected from the nozzle 12 together with the fire extinguishing substance to participate in fire extinguishing without affecting the passing speed of the fire extinguishing substance. The fire extinguishing device 100 of the present invention achieves cooling of the fire extinguishing substance while also increasing the ejection speed, thereby improving the fire extinguishing efficiency.

The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

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 variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims (7)

1. A fire extinguishing device, comprising: A fire extinguishing container, having a containing cavity and a nozzle connected to the containing cavity at one end; An ejection assembly, comprising an ignition element and an aerosol fire extinguishing agent, wherein the aerosol fire extinguishing agent is filled in the containing cavity, and the ignition element is used to ignite the aerosol fire extinguishing agent to generate a fire extinguishing substance, so that the fire extinguishing substance is ejected from the ejection port along an ejection path; the aerosol fire extinguishing agent is in the form of powder, granules, flakes or blocks, or any combination thereof; and A liquid coolant is filled in the containing cavity, the liquid coolant is located on the spraying path and is in direct contact with the aerosol fire extinguishing agent; the liquid coolant is configured to absorb the heat of the fire extinguishing substance and vaporize from a liquid state to a gas state; the liquid coolant includes perfluorohexanone; Wherein, the liquid coolant and the aerosol fire extinguishing agent do not chemically react with each other. 2 . The fire extinguishing device according to claim 1 , characterized in that the aerosol fire extinguishing agent is located at an end of the accommodating chamber away from the nozzle. 3. The fire extinguishing device according to claim 2, characterized in that the fire extinguishing container has a bottom wall and a side wall arranged along the circumference of the bottom wall and connected to the bottom wall, and the bottom wall and the side wall surround and form the accommodating cavity; The bottom wall and the side wall define a positioning space, and the positioning space is in contact with the outer side of the aerosol fire extinguishing agent to position the aerosol fire extinguishing agent. 4. The fire extinguishing device according to claim 1, characterized in that the fire extinguishing device further comprises a positioning member, the positioning member is located in the accommodating cavity, the positioning member has an accommodating cavity and a communicating hole, and the accommodating cavity is communicated with the accommodating cavity through the communicating hole; The aerosol fire extinguishing agent is filled in the accommodating cavity and adheres to the inner wall of the accommodating cavity so as to be positioned in the accommodating cavity. 5 . The fire extinguishing device according to claim 4 , characterized in that the positioning member is an elastic positioning member, and an outer wall of the elastic positioning member abuts against an inner wall of the accommodating cavity so that the elastic positioning member is positioned in the accommodating cavity. 6. The fire extinguishing device according to claim 1, characterized in that a pressure relief member is provided at the nozzle, and the pressure relief member is used to connect the accommodating chamber with the outside of the accommodating chamber through the nozzle when the accommodating chamber reaches a preset pressure value. 7. The fire extinguishing device according to claim 6, characterized in that the fire extinguishing device further comprises a pipe network, one end of which is connected to the nozzle; or The fire extinguishing device also includes a spray pipe, one end of which is connected to the spray port, and the other end is connected to the fire extinguishing area.