CN216022828U

CN216022828U - Fire extinguisher

Info

Publication number: CN216022828U
Application number: CN202121969470.0U
Authority: CN
Inventors: 揭劲峰; 张俊峰; 李先军
Original assignee: Hubei Jiandun Fire Technology Co Ltd
Current assignee: Hubei Jiandun Fire Technology Co Ltd
Priority date: 2021-08-20
Filing date: 2021-08-20
Publication date: 2022-03-15
Anticipated expiration: 2031-08-20

Abstract

The utility model relates to a fire extinguisher, which comprises a body, a fire extinguisher body and a fire extinguishing agent storage device, wherein the fire extinguisher body is provided with a medicament chamber for storing fire extinguishing agents and a gas generating chamber for storing gas generating agents, and the body is also provided with a nozzle communicated with the medicament chamber; the body is also provided with a communicating channel for communicating the medicament chamber with the gas generating chamber, the communicating channel is provided with an isolation section and a communicating section which are connected along the extending direction of the communicating channel, and the isolation section is arranged closer to the gas generating chamber relative to the communicating section; the fire extinguishing agent also comprises a piston, the piston is positioned at the isolation section to isolate the agent chamber and the gas generation chamber from each other, and the piston can slide to the communication section under pressure to communicate the agent chamber and the gas generation chamber with each other. When the gas generating agent is not ignited, the piston is positioned at the isolation section to isolate the medicament chamber and the gas generating chamber, and when the gas generating agent is ignited, a large amount of generated gas can push the piston to move to the communication section in a direction away from the gas generating chamber, so that the medicament chamber and the gas generating chamber are communicated with each other, and the gas enters the medicament chamber to push the fire extinguishing medicament to be sprayed out from the nozzle to extinguish fire.

Description

Fire extinguisher

Technical Field

The utility model relates to the technical field of fire fighting, in particular to a fire extinguisher.

Background

Compared with pressure-storage liquid fire extinguishers, the non-pressure-storage liquid fire extinguishers have better safety and reliability, but the non-pressure-storage liquid fire extinguishers usually adopt gas generating agents as generators, and generate a large amount of gas to push the liquid fire extinguishing agents to extinguish fire.

When the non-pressure-storage liquid fire extinguisher is stored for a long time, if the gas generating agent and the liquid fire extinguishing agent are not sealed properly, the gas generating agent cannot be ignited or the liquid fire extinguishing agent fails.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to provide a fire extinguisher capable of avoiding the failure of the gas generating agent or the failure of the liquid extinguishing agent, aiming at the problem that the gas generating agent cannot be ignited or the liquid extinguishing agent fails if the gas generating agent and the liquid extinguishing agent are improperly sealed in the long-term storage of the existing non-pressure storage liquid fire extinguisher.

The application provides a fire extinguisher, includes:

the body is provided with a medicament chamber and a gas production chamber, the medicament chamber is used for storing fire extinguishing medicaments, the gas production chamber is used for storing gas production medicaments, the body is also provided with a nozzle communicated with the medicament chamber, and the fire extinguishing medicaments can be sprayed outwards from the nozzle;

the body is also provided with a communication channel for communicating the medicament chamber with the gas generating chamber, the communication channel is provided with an isolation section and a communication section which are connected along the extension direction of the communication channel, and the isolation section is arranged closer to the gas generating chamber relative to the communication section;

the fire extinguisher further comprises a piston, the piston is located on the isolation section to isolate the medicament chamber and the gas generation chamber from each other, and the piston can slide to the communication section under pressure to communicate the medicament chamber and the gas generation chamber with each other.

In one embodiment, the inner contour of the insulating section matches the outer contour of the piston.

In one embodiment, the communication section has a communication groove provided on an inner wall thereof, and a dimension of the communication groove in an extending direction of the communication passage is larger than a thickness of the piston.

In one embodiment, the communication groove is annular.

In one embodiment, one end of the communicating section, which is far away from the isolating section, is provided with a limiting part, and the limiting part can abut against the piston along the extending direction of the communicating channel so as to limit the piston to be separated from the communicating channel.

In one embodiment, the gas generant has a pilot end that can be ignited, the pilot end being disposed toward the piston.

In one embodiment, the fire extinguisher further comprises an initiating explosive package and an ignition element, wherein the initiating explosive package is arranged between the piston and the ignition end of the gas generating agent and is connected with the ignition element;

the ignition member is capable of igniting the initiator package to ignite the gas generant.

In one embodiment, the body comprises a first housing and a second housing, the first housing having the medicament chamber and the spout, the second housing having the gas generating chamber and the communication channel;

the first shell is provided with a fixing hole used for communicating the medicament chamber with the outside, the second shell is fixed at the fixing hole, and one end with the communicating channel extends into the medicament chamber from the fixing hole.

In one embodiment, the fire extinguisher further comprises a coating piece, and the coating piece is arranged in the gas generation chamber and used for coating the gas generating agent.

In one embodiment, one end of the communication channel, which is far away from the gas generating chamber, is provided with a first communication port communicated with the medicament chamber, and the first communication port is arranged in a staggered manner with the nozzle.

When the gas generating agent is not ignited, the piston can be positioned at the isolation section to well isolate the medicament chamber and the gas generating chamber, when the gas generating agent is ignited, a large amount of gas can be generated, and the large amount of gas can generate certain pressure on the piston, so that the piston can move in the direction back to the gas generating chamber, namely the direction of the communication section, and finally when the piston reaches the communication section, the medicament chamber and the gas generating chamber can be communicated with each other, so that the gas enters the medicament chamber to push the fire extinguishing medicament to be sprayed out from the nozzle to extinguish fire. The utility model provides a fire extinguisher, simple, with low costs, and isolated effective with the mode of isolated medicament of putting out a fire and gas production agent through setting up piston and intercommunication passageway cooperation.

Drawings

FIG. 1 is a schematic sectional view of a fire extinguisher according to an embodiment of the present invention;

FIG. 2 is a schematic sectional view of the fire extinguisher shown in FIG. 1 in another state;

fig. 3 is an enlarged schematic view of a portion a of the fire extinguisher shown in fig. 2.

Detailed Description

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

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

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

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

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

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

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

Furthermore, the drawings are not 1: 1, and the relative dimensions of the various elements in the figures are drawn for illustration only and not necessarily to true scale.

FIG. 1 is a schematic sectional view of a fire extinguisher according to an embodiment of the present invention; fig. 2 is a schematic sectional view showing another state of the fire extinguisher shown in fig. 1. For the purpose of illustration, the drawings show only the structures associated with embodiments of the utility model.

Referring to the drawings, an embodiment of the present invention provides a fire extinguisher 100, which includes a body 10, the body 10 having a chemical chamber 11 and a gas generating chamber 12, the chemical chamber 11 being used for storing a fire extinguishing chemical 13, the gas generating chamber 12 being used for storing a gas generating agent 14, the body 10 further having a nozzle 15 communicating with the chemical chamber 11, the fire extinguishing chemical 13 being capable of being ejected from the nozzle 15.

In the embodiment of the present application, the fire extinguishing agent 13 is perfluorohexanone, and in other embodiments, it may be other liquid fire extinguishing agents, and is not limited herein. In the embodiment of the present application, the gas generating agent 14 is aerosol, and the aerosol can generate a large amount of gas after being ignited, so as to pressurize the agent chamber 11 and further push the fire extinguishing agent 13 to be sprayed out from the nozzle 15. In other embodiments, the gas generant 14 may be other gas generants other than aerosol, and is not limited herein.

The fire extinguishing agent 100 further includes a piston 20, the piston 20 is located at the isolation section 161 to isolate the agent chamber 11 and the gas generation chamber 12 from each other, and the piston 20 can be moved to the communication section 162 under pressure to communicate the agent chamber 11 and the gas generation chamber 12 with each other.

Thus, when the gas generating agent 14 is not ignited, the piston 20 can be located at the isolation section 161 to isolate the medicine chamber 11 and the gas generating chamber 12 well, when the gas generating agent 14 is ignited, a large amount of gas can be generated, and the large amount of gas can generate a certain pressure on the piston 20, so that the piston 20 can move in a direction away from the gas generating chamber 12, that is, the communication section 162, and finally when the gas generating agent reaches the communication section 162, the medicine chamber 11 and the gas generating chamber 12 can be communicated with each other, so that the gas enters the medicine chamber 11 to push the fire extinguishing agent 13 to be sprayed out from the nozzle 15 for fire extinguishing. The fire extinguisher 100 of the present application is simple, low cost, and effective in isolation by providing the piston 20 to cooperate with the communicating channel 16 to isolate the fire suppressant 13 from the gas generant 14.

It should also be noted that a large amount of gas can generate a certain pressure on the piston 20, and this pressure can also be a pressure build-up of gas in the gas generation chamber 12, which then causes the pressure in the gas generation chamber 12 to rise, thereby acting on the piston 20.

In particular, in the present embodiment, the inner contour of the isolation section 161 matches the outer contour of the piston 20. Thus, the isolation method is simpler and more reliable.

The communication section 162 has a communication groove 1621 provided on an inner wall thereof, and the dimension of the communication groove 1621 in the extending direction of the communication passage 16 is larger than that of the piston 20. The arrangement mode of the communication groove 1621 is simple, the processing technology is simple, and the communication is stable. Preferably, the communication groove 1621 is annular. In this way, gas can be made to enter the medicine compartment 11 in the circumferential direction of the communication passage 16, improving the reliability of communication.

As shown in fig. 3, in some embodiments, an end of the communication section 162 away from the isolation section 161 is provided with a limiting portion 163, and the limiting portion 163 can abut against the piston 20 along the extending direction of the communication channel 16 to limit the piston 20 from being separated from the communication channel 16. Specifically, the stopper 163 is provided to protrude from the inner wall of the communication passage 16 in the radial direction of the communication passage 16. Thus, the piston 20 is prevented from being separated from the communication passage 16 and entering the chemical chamber 11, thereby blocking the nozzle 15, causing difficulties in spraying the fire extinguishing chemical 13 and causing fire extinguishing failure.

Referring again to fig. 1, in some embodiments, the piston 20 includes a piston cylinder and a seal ring disposed around the piston cylinder. Thus, the medicine chamber 11 and the gas generating chamber 12 can be reliably isolated when the piston 20 is located at the isolation section 161. Specifically, the sealing ring is an elastic sealing ring, and can be compressed between the cylinder of the piston and the inner wall of the isolation section 161 when the piston 20 is located at the isolation section 161.

In the embodiment of the present application, the body 10 includes a first housing 17 and a second housing 18, the first housing 17 has a medicine chamber 11 and a nozzle 15, the second housing 18 has a gas generating chamber 12 and a communicating channel 16, the first housing 17 is opened with a fixing hole 19 for communicating the medicine chamber 11 and the outside of the first housing 17, the second housing 18 is fixed at the fixing hole 19, and one end having the communicating channel 16 extends into the medicine chamber 11 from the fixing hole 19.

In this way, the chemical chamber 11 is formed between the first housing 17 and the second housing 18, and the communication passage 16 is provided in the chemical chamber 11, so that the structure of the fire extinguisher 100 can be made more compact, and secondly, the gas ejected from the communication passage 16 can be ensured to be completely introduced into the chemical chamber 11, thereby improving the housing stability of the fire extinguisher 100 and the ejection stability of the fire extinguishing chemical 13.

Further, the first housing 17 and the second housing 18 may be integrally formed, or the second housing 18 may be fixedly connected to the first housing 17 through a subsequent process, specifically, by bonding or welding, and the like, which is not limited herein.

In some embodiments, the end of the communication channel 16 remote from the gas generating chamber 12 is provided with a first communication port 164 in communication with the medicament chamber 11, the first communication port 164 being offset from the spout 12. In this way, the gas can be introduced into the chemical chamber 11 as early as possible through the first communication port 164, and is not directly discharged from the discharge port 12, thereby improving the discharge reliability of the fire extinguishing chemical 13.

To ensure that the resilient seal 30 can be pressed to slide into the communicating section 162 after the gas generant 14 is ignited, in some embodiments, the gas generant 14 has a pilot end that can be ignited, the pilot end being disposed toward the piston 20. Preferably, the pilot end may be disposed directly opposite the piston 20. Therefore, the distance between the piston 20 and the gas generating agent 14 is minimized to enable energy to be accumulated on the piston 20 at the moment when the gas generating agent 14 is ignited, so as to be pushed quickly and stably, and on the other hand, the problem that the gas generating agent 14 blocks the communication groove 1621 of the communication section 162 due to the overlarge pushing force of the gas generating agent 14 back to the piston 20, so that the pressure of the gas generating chamber 12 is overlarge, and the gas generating chamber explodes or the gas is sprayed from the other end of the gas generating chamber 12 can be avoided.

Further, the fire extinguisher 100 also includes a pilot 30, the pilot 30 being controlled to activate to ignite the gas generant 14, the pilot 30 being located between the piston 20 and the ignition end of the gas generant 14. In this manner, the ignition end of the gas generant 14 can be reliably ignited by the provision of the ignition element 30. Specifically, the pilot 30 includes a heat-sensitive wire or a firing head.

In some embodiments, the fire extinguisher 100 further comprises an initiator charge 40, the initiator charge 40 being disposed between the piston 20 and the ignition end of the gas generant 14 and being connected to the ignition element 30, the ignition element 30 being capable of igniting the initiator charge 40 to ignite the gas generant 14. In this manner, the ability to ignite can be further enhanced by providing the initiator charge 40 to ensure that the gas generant 14 can be ignited.

Specifically, the initiator charge 40 may be a pyrotechnic charge.

In some embodiments, the fire extinguisher 100 further comprises a covering 50, the covering 50 being disposed in the gas generating chamber 12 for covering the gas generant 14. By coating the gas generant 14 with the coating 50, the gas generant 14 can be stably combusted to continuously generate gas, and the coating 50 has the effects of heat insulation, shock resistance and salt corrosion resistance, so the IP protection grade of the gas generant 14 is also improved. Specifically, the covering member 50 includes a covering silicone rubber.

Compared with the prior art, the fire extinguisher 100 provided by the embodiment of the utility model has the following beneficial effects:

when the gas generating agent 14 is not ignited, the piston 20 can be located at the isolation section 161 to isolate the medicine chamber 11 and the gas generating chamber 12 well, when the gas generating agent 14 is ignited, a large amount of gas can be generated, and a certain pressure can be generated on the piston 20 by the large amount of gas, so that the piston 20 can move in a direction away from the gas generating chamber 12, namely the direction of the communication section 162, and finally when the communication section 162 is reached, the medicine chamber 11 and the gas generating chamber 12 can be communicated with each other, so that the gas can enter the medicine chamber 11 to push the fire extinguishing medicine 13 to be sprayed out from the nozzle 15 for fire extinguishing. The fire extinguisher 100 of the present application is simple, low cost, and effective in isolation by providing the piston 20 to cooperate with the communicating channel 16 to isolate the fire suppressant 13 from the gas generant 14.

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

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

Claims

1. A fire extinguisher, comprising:

2. A fire extinguisher as claimed in claim 1, wherein the insulating section has an internal profile that matches the external profile of the piston.

3. A fire extinguisher as claimed in claim 1, wherein said communication section has a communication groove provided on an inner wall thereof, a dimension of said communication groove in an extending direction of said communication passage being larger than a thickness of said piston.

4. A fire extinguisher as claimed in claim 3, wherein said communicating recess is annular.

5. The fire extinguisher as claimed in claim 1, wherein one end of the communicating section, which is far away from the isolating section, is provided with a limiting part, and the limiting part can be abutted against the piston along the extending direction of the communicating channel so as to limit the piston from being separated from the communicating channel.

6. A fire extinguisher as claimed in claim 1, wherein said gas generant has an ignition end which can be ignited, said ignition end being disposed toward said piston.

7. A fire extinguisher as claimed in claim 6, further comprising an initiating charge and an ignition element, said initiating charge being disposed between said piston and said ignition end of said gas generant and being connected to said ignition element;

8. A fire extinguisher as claimed in claim 1, wherein said body includes a first housing having said medicament chamber and said spout and a second housing having said gas generating chamber and said communication channel;

9. The fire extinguisher of claim 1, further comprising a coating member disposed within the gas generating chamber for coating the gas generating agent.

10. The fire extinguisher of claim 1, wherein an end of the communication channel remote from the gas generating chamber is provided with a first communication port communicated with the chemical chamber, and the first communication port is arranged in a staggered manner with the nozzle.