CN107007961A - A kind of fire extinguisher of adjustable acoustic pressure size - Google Patents
A kind of fire extinguisher of adjustable acoustic pressure size Download PDFInfo
- Publication number
- CN107007961A CN107007961A CN201710272165.8A CN201710272165A CN107007961A CN 107007961 A CN107007961 A CN 107007961A CN 201710272165 A CN201710272165 A CN 201710272165A CN 107007961 A CN107007961 A CN 107007961A
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- CN
- China
- Prior art keywords
- acoustic pressure
- fire extinguisher
- frequency
- pressure size
- analog signal
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire Alarms (AREA)
Abstract
The present invention relates to a kind of fire extinguisher of adjustable acoustic pressure size, including power supply, signal generator, power amplifier and loudspeaker, the power supply is used to provide electric power for fire extinguisher；The signal generator is used to produce low-frequency square-wave analog signal, and by Regulate signal frequency, reaches the purpose for changing voltage swing；The power amplifier is used to the low-frequency square-wave analog signal carrying out undistorted amplification；The sounding end of the loudspeaker is provided with the operatic tunes；Low-frequency square-wave analog signal after amplification is converted to sound wave and played out by the loudspeaker；The operatic tunes is used to be oriented aggregation to the sound wave that loudspeaker is played.The present invention can adjust acoustic pressure, improve extinguishing effect.
Description
Technical field
The present invention relates to fire-fighting equipment technical field, more particularly to a kind of fire extinguisher of adjustable acoustic pressure size.
Background technology
The progress for being more than society that the fast development of the mankind is brought, while being accompanied by various to human life
The various harm that property safety is impacted, fire is exactly one of which.Traditional fire-fighting mode is varied, but fire house will
The various fire extinguishing scenes faced are to the demand of fire-fighting mode then considerably beyond existing method.It is for electrical equipment place etc. one
Row Code in Hazardous Special Locations, needs special mode to be put out a fire again.Such as using gas extinguishing system as breathed out dragon series, carbon dioxide
Often it is applied to this kind of place.However, there are some shortcomings in gas extinguishing system：The malfunction of gas extinguishing system in confined space
Make to threaten the life security of the inside personnel, and fire extinguishing in case of emergency starts when needing evacuating personnel influence startup
Between.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of fire extinguisher of adjustable acoustic pressure size, can adjust acoustic pressure,
Improve extinguishing effect.
The technical solution adopted for the present invention to solve the technical problems is：A kind of fire extinguisher of adjustable acoustic pressure size is provided,
Including power supply, signal generator, power amplifier and loudspeaker, the power supply is used to provide electric power for fire extinguisher；The signal
Generator is used to produce low-frequency square-wave analog signal, and by Regulate signal frequency, reaches the purpose for changing voltage swing；It is described
Power amplifier is used to the low-frequency square-wave analog signal carrying out undistorted amplification；Install sound in the sounding end of the loudspeaker
Chamber；Low-frequency square-wave analog signal after amplification is converted to sound wave and played out by the loudspeaker；The operatic tunes is used for raising one's voice
The sound wave that device is played is oriented aggregation.
It is also equipped with monitoring fire alarm module automatically on the power supply；The automatic monitoring fire alarm module is in monitoring
To when having fire generation, power supply is automatically opened up.
The signal generator is adjusted by limited element analysis technique to be produced the frequency of low-frequency square-wave analog signal to reach
Optimal fire extinguishing state.
The power amplifier is provided with overvoltage, excessively stream and overtemperature protection module.
The operatic tunes uses Parabolic Collapsible structure.
The frequency for the low-frequency square-wave analog signal that the signal generator is produced is 65Hz.
Beneficial effect
As a result of above-mentioned technical scheme, the present invention compared with prior art, has the following advantages that and actively imitated
Really：
The present invention uses Finite element emuktional method, by continuous domain discretization, makes single by limited
The assembly that member is combined, sets up the finite element formula of sound field to simulate the distribution of sound field.By complicated procedure decomposition
Into simple process, and confidence level and the higher result of accuracy are obtained.
The present invention reaches the purpose of regulation acoustic pressure with this by adjusting f frequencies, and acoustic pressure is bigger, and the increment of air pressure is bigger,
The density degree of air is also just poor must be more.When flame location was in air sparse time, oxygen concentration, pressure, gas
Combustible concentration all reduces, and reaches the effect for suppressing burning.So that the blow-off velocity of fire extinguisher reaches optimum state.
The power supply that the present invention is used also possesses automatic monitoring fire alarm module, together for portable power source on portable power source
When manual automatic switch is installed, convenient, security is higher.
Present invention may apply to the burning things which may cause a fire disaster of most species.
The present invention can introduce unmanned plane to carry out self-extinguishing, and people carry out remote control.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is cuboid interior space sound-filed simulation figure；
Fig. 3 is the acoustic pressure cloud charts that frequency is 30Hz；
Fig. 4 is the acoustic pressure cloud charts that frequency is 65Hz.
Embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content of the invention lectured has been read, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiments of the present invention are related to a kind of fire extinguisher of adjustable acoustic pressure size, as shown in figure 1, by portable power source 1, letter
Number generator 2, power amplifier 3, loudspeaker 4 and the operatic tunes 5 are constituted.Portable power source 1 is powered to fire extinguisher, with tradition fire extinguishing
The maximum difference of device is, automatic monitoring fire alarm module is provided with portable power source 1, when automatic monitoring fire alarm module
Power supply can be automatically opened up when having monitored fire generation.Automatic monitoring fire alarm module is provided with hand switch and automatically
Switch, when hand switch is opened, automatic monitoring fire alarm module can not automatically open up power supply.Signal generator 2 produces low
Frequency square wave analog signal, and by Regulate signal frequency, reach the purpose for changing voltage swing.Power amplifier 3 is used for will be low
Frequency square wave analog signal carries out undistorted amplification, and what the present invention was selected has fairly perfect overvoltage, overcurrent and superheat defencive function
Power amplifier.Square wave analog signal after amplification is converted to sound wave by loudspeaker 4.The sounding end of loudspeaker 4 is connected with the operatic tunes
5, the sound wave that the operatic tunes 5 is played to loudspeaker 4 is oriented aggregation and improves acoustic pressure.By theoretical research and experimental analysis, draw
Parabolic scalable acoustical cavity can reach optimal extinguishing effect.
As shown in Fig. 2 being modeled using ANSYS finite element analysis softwares, selecting unit type is FLUID30 three-dimensional sound field lists
Member, simulates the distribution of sound field of a cuboid interior space, and is distinguished by room air and close to the air of wall, with
Different Modelon Modelings.Key point is created first, then is created straight line, created body, and then with FInite Element to cuboid Interior Space
Between carry out grid division.Cuboid is divided with coupling unit, modification room air cell type is air element, then to wall
On node apply displacement constraint.Wall and window are respectively set to two kinds of different acoustic impedances.One is set in coffin
Individual cylindrical sound source, and the frequencies different to sound source adjustment.
Harmonic responding analysis is set in ANSYS softwares, the real and imaginary parts of different frequency in the space are extracted respectively
Acoustic pressure cloud charts.As shown in Figure 3 and Figure 4, analyzed according to comparing result, obtain all-bottom sound during frequency f=65Hz or so
Source causes the maximum of the acoustic pressure in the region to be 19.907, and minimum value is -53.6514, and more remote apart from sound source, and acoustic pressure is got over
It is small.In same temperature off field, frequency is lower, and the distribution uniform of sound field, wavelength is longer；And in the case of relative high frequency, sound
Significant change can then occur for the distribution of field, and more remote apart from sound source, wavelength is shorter, and acoustic pressure is relatively small.Analyzed by above-mentioned
To the acoustic pressure parameter value of the optimal extinguishing effect of fire extinguisher, then signal generator can be according to analysis result generation corresponding frequencies
Low-frequency square-wave signal.
Claims (6)
1. a kind of fire extinguisher of adjustable acoustic pressure size, including power supply (1), signal generator (2), power amplifier (3) and raise one's voice
Device (4), it is characterised in that the power supply (1) is used to provide electric power for fire extinguisher；The signal generator (2) is low for producing
Frequency square wave analog signal, and by Regulate signal frequency, reach the purpose for changing voltage swing；The power amplifier (3) is used
In the low-frequency square-wave analog signal is carried out into undistorted amplification；The sounding end of the loudspeaker (4) is provided with the operatic tunes (5)；Institute
State loudspeaker (4) the low-frequency square-wave analog signal after amplification is converted into sound wave and play out；The operatic tunes (5) is used for raising one's voice
The sound wave that device (4) is played is oriented aggregation.
2. the fire extinguisher of adjustable acoustic pressure size according to claim 1, it is characterised in that also installed on the power supply (1)
There is automatic monitoring fire alarm module；The automatic monitoring fire alarm module is automatically opened up when having monitored fire generation
Power supply (1).
3. the fire extinguisher of adjustable acoustic pressure size according to claim 1, it is characterised in that the signal generator (2) is led to
Limited element analysis technique is crossed to adjust the frequency of generation low-frequency square-wave analog signal to reach optimal fire extinguishing state.
4. the fire extinguisher of adjustable acoustic pressure size according to claim 1, it is characterised in that the power amplifier (3) sets
There are overvoltage, excessively stream and overtemperature protection module.
5. the fire extinguisher of adjustable acoustic pressure size according to claim 1, it is characterised in that the operatic tunes (5) uses parabolic
The Collapsible structure of line style.
6. the fire extinguisher of adjustable acoustic pressure size according to claim 1, it is characterised in that signal generator (2) production
The frequency of raw low-frequency square-wave analog signal is 65Hz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710272165.8A CN107007961A (en) | 2017-04-24 | 2017-04-24 | A kind of fire extinguisher of adjustable acoustic pressure size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710272165.8A CN107007961A (en) | 2017-04-24 | 2017-04-24 | A kind of fire extinguisher of adjustable acoustic pressure size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107007961A true CN107007961A (en) | 2017-08-04 |
Family
ID=59447465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710272165.8A Pending CN107007961A (en) | 2017-04-24 | 2017-04-24 | A kind of fire extinguisher of adjustable acoustic pressure size |
Country Status (1)
| Country | Link |
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| CN (1) | CN107007961A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108837345A (en) * | 2018-05-21 | 2018-11-20 | 湖南瑞中科技有限责任公司 | It is a kind of can terminal configuration operatic tunes resonance type sound wave extinguishing device |
| CN109224351A (en) * | 2018-09-26 | 2019-01-18 | 马力 | Orient sound wave fire extinguisher |
| CN109331372A (en) * | 2018-10-23 | 2019-02-15 | 佛山市南海区九江镇初级中学 | Fire extinguisher and fire extinguisher monitoring system |
| CN113318366A (en) * | 2021-06-15 | 2021-08-31 | 浙江大学 | Fire extinguishing device for strengthening fine water mist and external sound field |
| US11225326B2 (en) | 2017-12-14 | 2022-01-18 | Incaendium Initiative Corporation | Fire resistant aerial vehicle for suppressing widespread fires |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11225326B2 (en) | 2017-12-14 | 2022-01-18 | Incaendium Initiative Corporation | Fire resistant aerial vehicle for suppressing widespread fires |
| US12129030B2 (en) | 2017-12-14 | 2024-10-29 | Incaendium Initiative Corporation | Fire resistant aerial vehicle for suppressing widespread fires |
| CN108837345A (en) * | 2018-05-21 | 2018-11-20 | 湖南瑞中科技有限责任公司 | It is a kind of can terminal configuration operatic tunes resonance type sound wave extinguishing device |
| CN108837345B (en) * | 2018-05-21 | 2020-07-10 | 湖南瑞中科技有限责任公司 | Sound cavity resonance type sound wave fire extinguishing device capable of being configured at terminal |
| CN109224351A (en) * | 2018-09-26 | 2019-01-18 | 马力 | Orient sound wave fire extinguisher |
| CN109331372A (en) * | 2018-10-23 | 2019-02-15 | 佛山市南海区九江镇初级中学 | Fire extinguisher and fire extinguisher monitoring system |
| CN113318366A (en) * | 2021-06-15 | 2021-08-31 | 浙江大学 | Fire extinguishing device for strengthening fine water mist and external sound field |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20170804 |