Aerosol fire extinguisher starting feedback structure

Abstract

The utility model relates to a starting feedback structure of an aerosol fire extinguisher. The starting feedback structure comprises a shell, a reaction chamber, a cooling chamber and a low-melting-point metal wire, a nozzle structure is arranged at the front end of the shell; the reaction chamber is arranged at the rear part in the shell, the front end of the reaction chamber is opened, and a grain is arranged in the reaction chamber; the cooling chamber is arranged at the front part in the shell; the low-melting-point metal wire is arranged at an opening in the front end of the reaction chamber and is connected with the feedback mechanism through a wire; according to the starting feedback structure of the aerosol fire extinguisher provided by the utility model, the low-melting-point metal wire is selected as a feedback device and is arranged at a position close to the front end of the grain, so that after the hot aerosol fire extinguisher is started, the low-melting-point metal wire can be softened by high-temperature gas sprayed by the grain; meanwhile, the low-melting-point metal wire is broken under the action of stress when gas is sprayed, so that a feedback signal is transmitted, the low-melting-point metal wire cannot be broken only in a high-temperature environment, and the influence of external temperature on starting feedback of the fire extinguisher is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aerosol fire extinguishers, in particular to a start-up feedback structure of an aerosol fire extinguisher. Background Art

[0002] At present, fixed hot aerosol fire extinguishers use thermistors as the spray feedback devices of the fire extinguishers. Thermistors are generally installed on the metal inner tube of the fire extinguisher. In extreme cases, such as when the fire source is very close to the fire extinguisher and the fire is fierce, the metal shell of the fire extinguisher heats up quickly. Under the action of heat conduction, the thermistor will reach the working temperature, causing it to transmit feedback signals to the host when the fire extinguisher is not spraying, resulting in false alarms. Utility Model Content

[0003] Based on the above description, the utility model provides an aerosol fire extinguisher startup feedback structure. By selecting a low-melting-point metal wire as a feedback device and setting the low-melting-point metal wire at a position close to the front end of the powder column, after the hot aerosol fire extinguisher is started, the high-temperature gas generated by the spraying of the powder column will soften the low-melting-point metal wire. At the same time, the low-melting-point metal wire is broken by the force under the spraying of the gas, thereby transmitting a feedback signal. The low-melting-point metal wire cannot be broken only in a high-temperature environment, reducing the influence of the external temperature on the startup feedback of the fire extinguisher and avoiding false alarms.

[0004] The utility model provides a technical solution to the above-mentioned technical problems as follows: an aerosol fire extinguisher startup feedback structure, comprising a shell, a reaction chamber, a cooling chamber and a low-melting-point metal wire; a nozzle structure is arranged at the front end of the shell; the reaction chamber is arranged at the rear part inside the shell, the front end of the reaction chamber is open and a powder column is arranged inside; the cooling chamber is arranged at the front part inside the shell; the low-melting-point metal wire is arranged at the front end opening of the reaction chamber, and the low-melting-point metal wire is connected to a feedback mechanism through a wire.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows.

[0006] Furthermore, the feedback mechanism includes an indicator light and a first power supply; the indicator light and the low-melting-point metal wire are connected in parallel, and two ends of the indicator light and the low-melting-point metal wire are respectively connected to two ends of the first power supply.

[0007] Furthermore, the feedback mechanism also includes a relay and a second power supply; the coil end of the relay is connected in series with the indicator light; the switch end of the relay is connected in series with the second power supply, and both ends are connected to the communication interface of the host.

[0008] Furthermore, a lead-out structure is provided at the rear end of the shell; one end of the wire is connected to the low-melting-point metal wire, and the wire passes through the gap between the four sides of the reaction chamber and the inner wall of the shell, and the other end of the wire is led out from the lead-out structure and connected to the feedback mechanism.

[0009] Furthermore, the rear end of the reaction chamber is connected to the rear end inner wall of the shell via a pressure-relieving spring.

[0010] Furthermore, the cooling chamber includes a first cooling layer and a second cooling layer filled in sequence from back to front; the first cooling layer and the second cooling layer are separated by a metal filter.

[0011] Furthermore, the first cooling layer and the second cooling layer are both filled with ceramic balls, and the diameter of the ceramic balls in the first cooling layer is greater than the diameter of the ceramic balls in the second cooling layer.

[0012] Furthermore, a filter cover is provided at the rear end of the cooling chamber, and the filter cover is used to isolate the low-melting-point metal wire and the first cooling layer.

[0013] Furthermore, isolation rings are arranged around the cooling chamber.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0015] The utility model selects a low-melting-point metal wire as a feedback device and arranges the low-melting-point metal wire at a position close to the front end of the powder column. After the hot aerosol fire extinguisher is started, the high-temperature gas generated by the spraying of the powder column will soften the low-melting-point metal wire. At the same time, the low-melting-point metal wire is disconnected by the force under the spraying of the gas, thereby transmitting a feedback signal. The low-melting-point metal wire cannot be disconnected only in a high-temperature environment, thereby reducing the influence of the external temperature on the startup feedback of the fire extinguisher and avoiding false alarms. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a startup feedback structure of an aerosol fire extinguisher provided in an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the reaction chamber in the embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the cooling chamber in the embodiment of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the feedback mechanism in the embodiment of the utility model;

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Shell; 11. Nozzle structure; 12. Lead-out structure; 2. Reaction chamber; 3. Cooling chamber; 31. Isolation ring; 32. Air cooling layer; 33. First cooling layer; 34. Second cooling layer; 35. Filter cover; 36. Metal filter; 4. Low-melting-point metal wire; 5. Wire; 6. Feedback mechanism; 61. First power supply; 62. Indicator light; 63. Relay; 64. Second power supply; 7. Pressure-relief spring; 8. Drug column. DETAILED DESCRIPTION

[0022] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0024] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0025] An aerosol fire extinguisher startup feedback structure comprises a shell 1, a reaction chamber 2, a cooling chamber 3 and a low-melting-point metal wire 4. The front end of the shell 1 is provided with a nozzle structure 11, and the rear end is provided with a lead-out structure 12.

[0026] The reaction chamber 2 is arranged at the rear part of the housing 1, and the front end of the reaction chamber 2 is open and a drug column 8 is arranged inside. The low-melting-point metal wire 4 is arranged at the front end opening of the reaction chamber 2, and the low-melting-point metal wire 4 is connected to the feedback mechanism 6 through the wire 5. Specifically, one end of the wire 5 is connected to the low-melting-point metal wire 4, and the wire 5 passes through the gap between the surrounding of the reaction chamber 2 and the inner wall of the housing 1, and the other end of the wire 5 is connected to the feedback mechanism 6 after being led out from the lead-out structure 12.

[0027] The rear end of the reaction chamber 2 is also connected to the rear end inner wall of the shell 1 through a pressure-relief spring 7. When the air pressure in the shell 1 is too high, the pressure-relief spring 7 is compressed to increase the space in the shell 1, thereby reducing the air pressure in the shell 1 and preventing the fire extinguisher from exploding due to pressure buildup.

[0028] The cooling chamber 3 is arranged at the front part of the housing 1, and an isolation ring 31 is arranged around the cooling chamber 3. The cooling chamber 3 includes a first cooling layer 33 and a second cooling layer 34 filled in sequence from the back to the front. The first cooling layer 33 and the second cooling layer 34 are isolated by a metal filter 36. A filter cover 35 is arranged at the rear end of the cooling chamber 3, and the filter cover 35 is used to isolate the low-melting-point metal wire 4 and the first cooling layer 33, and form an air cooling layer 32 at the bottom of the cooling chamber 3. After the aerosol fire extinguishing agent generated by the reaction of the explosive column 8 is cooled by the air cooling layer 32, the first cooling layer 33 and the second cooling layer 34 in sequence, the temperature is greatly reduced, so that the nozzle temperature of the aerosol fire extinguishing agent is very low when it is discharged, which overcomes the disadvantage of the original high temperature and flame spraying.

[0029] In this embodiment, both the first cooling layer 33 and the second cooling layer 34 are filled with ceramic balls, and the diameter of the ceramic balls in the first cooling layer 33 is greater than the diameter of the ceramic balls in the second cooling layer 34 .

[0030] In this embodiment, a low-melting-point metal wire 4 is selected as a feedback device, and the low-melting-point metal wire 4 is arranged at a position close to the front end of the explosive column 8. After the hot aerosol fire extinguisher is started, the high-temperature gas generated by the explosive column 8 will soften the low-melting-point metal wire 4. At the same time, the low-melting-point metal wire 4 is broken by the force exerted by the gas spray, thereby transmitting a feedback signal. The low-melting-point metal wire 4 cannot be broken only in a high-temperature environment, thereby reducing the influence of the external temperature on the fire extinguisher startup feedback and avoiding false alarms.

[0031] The feedback mechanism 6 of this embodiment includes an indicator light 62, a first power source 61, a relay 63 and a second power source 64. The two ends of the low-melting-point metal wire 4 are respectively connected to the two ends of the first power source 61 to form a short circuit. After the coil end of the relay 63 is connected in series with the indicator light 62, the two ends are respectively connected to the two ends of the first power source 61. After the switch end of the relay 63 is connected in series with the second power source 64, the two ends are connected to the communication interface of the host.

[0032] When the low melting point metal wire 4 is disconnected, short circuit contact is formed, and the indicator light 62 is turned on to warn the staff nearby. At the same time, the relay 63 is energized to connect the switch end, thereby transmitting a feedback signal to the host.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An aerosol fire extinguisher startup feedback structure, characterized in that: It includes a shell, a reaction chamber, a cooling chamber and a low-melting-point metal wire; a nozzle structure is arranged at the front end of the shell; the reaction chamber is arranged at the rear part of the shell, the front end of the reaction chamber is open and a medicine column is arranged inside; the cooling chamber is arranged at the front part of the shell; the low-melting-point metal wire is arranged at the front end opening of the reaction chamber, and the low-melting-point metal wire is connected to a feedback mechanism through a wire.

2. The aerosol fire extinguisher activation feedback structure according to claim 1, characterized in that: The feedback mechanism comprises an indicator light and a first power source; the indicator light and the low-melting-point metal wire are connected in parallel, and two ends of the indicator light and the low-melting-point metal wire are respectively connected to two ends of the first power source.

3. The aerosol fire extinguisher activation feedback structure according to claim 2, characterized in that: The feedback mechanism also includes a relay and a second power supply; the coil end of the relay is connected in series with the indicator light; the switch end of the relay is connected in series with the second power supply, and both ends are connected to the communication interface of the host.

4. The aerosol fire extinguisher activation feedback structure according to claim 1, characterized in that: The rear end of the shell is provided with a lead-out structure; one end of the wire is connected to the low-melting-point metal wire, and the wire passes through the gap between the periphery of the reaction chamber and the inner wall of the shell, and the other end of the wire is led out from the lead-out structure and connected to the feedback mechanism.

5. The aerosol fire extinguisher activation feedback structure according to claim 1, characterized in that: The rear end of the reaction chamber is connected to the rear end inner wall of the shell through a pressure-relieving spring.

6. The aerosol fire extinguisher activation feedback structure according to claim 1, characterized in that: The cooling chamber includes a first cooling layer and a second cooling layer filled in sequence from back to front; the first cooling layer and the second cooling layer are separated by a metal filter.

7. The aerosol fire extinguisher activation feedback structure according to claim 6, characterized in that: The first cooling layer and the second cooling layer are both filled with ceramic balls, and the diameter of the ceramic balls in the first cooling layer is greater than the diameter of the ceramic balls in the second cooling layer.

8. The aerosol fire extinguisher activation feedback structure according to claim 6, characterized in that: A filter cover is arranged at the rear end of the cooling chamber, and the filter cover is used to isolate the low-melting-point metal wire and the first cooling layer.

9. The aerosol fire extinguisher activation feedback structure according to claim 1, characterized in that: Isolation rings are arranged around the cooling chamber.

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