- 技术(专利)类型 实用新型
- 申请号/专利号 202221259555.4
- 技术(专利)名称 一种小型自动灭火装置
- 项目单位
- 发明人 陈明涛
- 行业类别 人类生活必需品
- 技术成熟度 详情咨询
- 交易价格 ¥面议
- 联系人 陈明涛
- 发布时间 2023-05-16
项目简介
本实用新型涉及一种小型自动灭火装置,包括灭火剂储存容器、管路系统、控制系统及电源模块,灭火剂储存容器出口连接有容器阀;管路系统包括管道、电控阀门、灭火剂释放口及热敏喷头,管道与灭火剂储存容器出口相连通,并形成两并联出口管路,一路安装电控阀门并与灭火剂释放口相连通,另一路连接热敏喷头;控制系统包括火灾探测装置及控制模块,控制模块连接并控制电控阀门。本实用新型可自动探测是否发生火灾,发生火灾时,可控制电控阀门自动释放灭火剂;热敏喷头在高温作用下会自动打开释放灭火剂;具有自动、手动、受热三种灭火剂释放方式;体积小、自动化程度高、可靠性高、免安装、使用方便,可避免误操作,尤其适用于空间窄小的场所使用。
说明书
Small-sized automatic fire extinguishing device
Technical Field
[0001]The utility model relates to the technical field of fire extinguishing devices, in particular to a small-sized automatic fire extinguishing device.
Background
[0002]For typical sites with fire-fighting requirements such as large and medium-sized buildings, large-sized vehicles, ships and large-sized equipment, the requirements of complete fire-fighting regulations are met, and various mature and reliable fire-fighting facilities and fire-fighting equipment applicable to the sites are spread on the market. Therefore, the fire safety of the places is generally guaranteed.
[0003]And for some places with narrow space, for example: elevator cabs, small storerooms, smaller areas of family rooms, family kitchens, small vehicles and ships and the like often have larger fire safety hazards. Taking an elevator car as an example, when a fire disaster happens in the elevator car, the fire disaster frequently happens suddenly, the fire disaster develops rapidly and violently, the fire is difficult to extinguish in the elevator, and personnel are difficult to escape; taking a small storage room as an example, a large number of articles are often placed inside the small storage room, and people are often unmanned, and once a fire disaster occurs, the fire disaster is difficult to find and extinguish in time. It can be seen that some places with narrow spaces have strong fire-fighting demands, and automatic fire extinguishing devices suitable for the places with narrow spaces are required to be equipped.
[0004]Most of the automatic fire extinguishing equipment in the prior art has complex structure and large volume, and generally needs to be installed in places such as pipelines and lines, and is difficult to be suitable for places with narrow space. Therefore, for some places with narrow space, the traditional method is still generally adopted at present, namely a certain number of fire extinguishers are arranged, and manual fire extinguishing is adopted. In the event of a sudden fire, serious consequences can occur if the fire-fighting equipment is not provided on site, or if the fire-fighting equipment is provided on site but not used timely and correctly by a person.
[0005]Therefore, there is a need to design a small, automatic and convenient fire extinguishing apparatus which is suitable for small space places, can timely detect and rapidly extinguish fire.
Disclosure of Invention
[0006]The utility model aims to overcome the defects of the prior art, and provides a small automatic fire extinguishing device which can automatically detect whether a fire disaster occurs or not, and when the fire disaster occurs, the fire extinguishing device can control an electric control valve to automatically release fire extinguishing agents according to a fire disaster detection signal on site or an externally input instruction; the automatic working process of the automatic fire extinguishing device can be interfered by field personnel, and the field personnel can directly and manually operate the automatic fire extinguishing device to extinguish fire; in addition, when the automatic fire extinguishing function of the device fails and the device can not be operated by field personnel to extinguish the fire, the thermosensitive nozzle can be automatically opened to release the fire extinguishing agent to extinguish the fire under the high temperature; the automatic control device has the advantages of small volume, high automation degree, high reliability, no installation, convenient use, no misoperation and being particularly suitable for places with narrow space.
[0007]The utility model adopts the following technical scheme:
[0008]a compact automatic fire extinguishing apparatus comprising:
[0009]the fire extinguishing agent storage container is used for storing fire extinguishing agent, and the outlet is connected with a container valve for controlling the opening and closing of the outlet;
[0010]the pipeline system comprises a pipeline, an electric control valve, a fire extinguishing agent release port and a thermosensitive nozzle; the pipeline inlet is communicated with the outlet of the fire extinguishing agent storage container and forms two parallel outlet pipelines, an electric control valve is arranged on one outlet pipeline, the outlet is communicated with the fire extinguishing agent release port, and the outlet of the other outlet pipeline is connected with the thermosensitive spray head;
[0011]the control system comprises a fire detection device and a control module, wherein the fire detection device is used for detecting whether a fire disaster occurs in a use environment; the control module is electrically and/or communicatively connected with the fire detection device and is connected with and controls the electric control valve, and the on-off control of the electric control valve is realized by controlling the on-off of power supply of the electric control valve;
[0012]and the power supply module is used for supplying power to the electric elements in the pipeline system and the control system.
[0013]Further, the control system also comprises a pressure detection device, wherein the pressure detection device is arranged on a rear end pipeline of a container valve of the fire extinguishing agent storage container and is used for detecting a pressure signal; the control module is electrically and/or communicatively connected to the pressure detection device.
[0014]Further, the electric control valve adopts an automatic manual control valve, and is provided with a manual operation device, a self-resetting contact switch is connected in series in a power supply loop of the automatic manual control valve, the self-resetting contact switch is used for enabling the automatic manual control valve to be powered off when triggered, and the manual operation device can only execute manual valve opening or closing operation when the automatic manual control valve is powered off.
[0015]Further, the small-sized automatic fire extinguishing device further comprises a shell with an opening, a cover plate for opening or closing the opening is arranged on the shell, the manual-automatic electric control valve and the self-resetting contact switch are all installed inside the shell, and the self-resetting contact switch is triggered when the cover plate is opened.
[0016]Further, the fire detection device comprises one single type of fire detector, or one composite fire detector, or a plurality of different types of fire detectors.
[0017]Further, the pressure detection device adopts a pressure sensor or a pressure gauge.
[0018]Further, the control module adopts a controller, and the controller is used for collecting the output signal of the fire detection device to judge whether a fire disaster occurs or not, and outputting an electric signal to control the electric control valve when judging that the fire disaster occurs; or receiving an external command signal, and controlling the electric control valve according to the external command;
[0019]or the control module adopts a logic control circuit for forming a set logic mapping relation between the input signal and the output signal, so that the electric control valve is controlled by the output electric signal when fire disaster occurs.
[0020]Further, the control system also comprises an alarm device and an emergency starting/stopping button; the control module is connected with and controls the alarm device; the emergency starting/stopping button is electrically connected with the control module and is used for manually carrying out emergency switching control on the electric control valve.
[0021]Further, the small-sized automatic fire extinguishing device comprises a plurality of fire extinguishing agent storage containers and a pipeline system, wherein a plurality of parallel inlet pipelines and two parallel outlet pipelines are formed in the pipeline, and the inlet pipelines and the two outlet pipelines are mutually communicated; the plurality of inlet pipelines are respectively communicated with the outlets of the plurality of fire extinguishing agent storage containers in a one-to-one correspondence manner, and each inlet pipeline is respectively provided with a one-way valve; an outlet pipeline is provided with an electric control valve, and the outlet is communicated with a fire extinguishing agent releasing port; the outlet of the other outlet pipeline is connected with a thermosensitive spray head; the fire extinguishing agent storage containers share two outlet pipelines, an electric control valve, a fire extinguishing agent release port and a thermosensitive nozzle;
[0022]or the fire extinguishing agent storage containers and the pipeline systems are arranged in one-to-one correspondence with the fire extinguishing agent storage containers, the electric control valves of the pipeline systems are respectively connected with the control module, and the fire extinguishing agent storage containers are respectively controlled to be opened or closed.
[0023]Further, the power module is used for converting alternating current provided by an external power supply into direct current to supply power for all the electric elements, and the power module comprises a rechargeable battery which is used for being switched into the rechargeable battery to supply power for all the electric elements when the external power supply is interrupted.
[0024]As can be seen from the above description of the present utility model, compared with the prior art, the present utility model has the following advantages:
[0025]firstly, the fire extinguishing agent storage container, the pipeline system, the control system and the power supply module are arranged, so that the fire disaster detection device can be utilized to automatically detect whether a fire disaster occurs, when the fire disaster is judged to occur, the control module is used for controlling the electric control valve, automatically releasing the fire extinguishing agent to extinguish the fire, and the alarm device is used for sending an alarm signal; the electric control valve adopts a manual and automatic integrated electric control valve, and provides two modes of manual and automatic control of the electric control valve; meanwhile, the thermosensitive spray head is arranged in parallel with the manual-automatic integrated electric control valve, and can be automatically opened to release the fire extinguishing agent to extinguish the fire under the action of high temperature of the fire, so that the control and manual operation are not needed, and the automatic release of the fire extinguishing agent can be ensured when the fire happens even if the device is powered off; the three fire extinguishing agent release modes of automatic release, manual release and heated release are provided, so that the reliability of the automatic fire extinguishing device can be effectively improved; the automatic control device has the advantages of small volume, high automation degree, high reliability, convenient use, no installation, convenient carrying, simple structure, low cost and the like, and is particularly suitable for places with narrow space.
[0026]Second, the power module internally mounted has chargeable battery, when the external 220V alternating current power supply is interrupted or abnormal, the power module can be automatically switched into the internal chargeable battery to supply power, and the power supply reliability of the power module can be improved.
[0027]Third, the automatic fire extinguishing device is provided with a plurality of fire detectors of different types or a composite fire detector, so that the reliability of fire detection can be effectively improved.
[0028]Fourth, through installing pressure detection device on the pipeline behind the container valve, can judge whether fire extinguishing agent storage container's internal pressure is normal, the pipeline behind the container valve of fire extinguishing agent storage container is in the totally closed state, monitor fire extinguishing agent and pipeline state in the fire extinguishing agent storage container to in time supply fire extinguishing agent, replace fire extinguishing agent storage container or maintenance pipeline, remain the fire extinguishing agent and be sufficient and pipeline is sealed well all the time, guarantee the operational reliability of device when the conflagration takes place.
[0029]Fifthly, the manual-automatic integrated electric control valve is connected with the self-resetting contact switch, and when the self-resetting contact switch is triggered, the manual-automatic integrated electric control valve is automatically powered off and enters a manual operation mode; the manual-automatic integrated electric control valve and the self-resetting contact switch are arranged in the shell, the cover plate is arranged for shielding, unintentional actions of people or other objects can not touch the manual operation device, the manual operation device can not be caused to act, the self-resetting contact switch is triggered to act only when the cover plate is opened, the power supply of the manual-automatic integrated electric control valve is cut off, the manual operation mode is entered, the operation is convenient, and misoperation can be avoided.
[0030]Sixth, through setting up urgent start/stop button, when automatic fire extinguishing apparatus starts normal operating, but manual urgent control electric control valve opens and sprays fire extinguishing agent, perhaps makes electric control valve close stop spraying fire extinguishing agent, can realize the manual quick urgent control under the device power on state, it is nimble convenient to use.
Drawings
[0031]Fig. 1 is a schematic view of the constitution of a small-sized automatic fire extinguishing apparatus according to embodiment 1 of the present utility model;
[0032]FIG. 2 is a schematic diagram of a control system and a pipeline system according to embodiment 1 of the present utility model;
[0033]FIG. 3 is an electrical schematic diagram of a power module of embodiment 1 of the utility model;
[0034]FIG. 4 is a schematic diagram of the control principle and the installation structure of the manual-automatic solenoid valve and the self-resetting contact switch of the small-sized automatic fire extinguishing apparatus of the embodiment 1 of the present utility model;
[0035]fig. 5 is a schematic view showing the external appearance of a small-sized automatic fire extinguishing apparatus according to embodiment 1 of the present utility model;
[0036]fig. 6 is a schematic top view of the operation panel of embodiment 1 of the present utility model;
[0037]fig. 7 is a schematic view showing the external appearance of a small-sized automatic fire extinguishing apparatus according to embodiment 2 of the present utility model;
[0038]FIG. 8 is an electrical schematic diagram of a power module according to embodiment 2 of the present utility model;
[0039]fig. 9 is a schematic view showing the use state of the automatic fire extinguishing apparatus of the embodiments 1 and 2 of the present utility model placed at an application site;
[0040]FIG. 10 is a schematic diagram of a control system and piping system according to embodiment 3 of the present utility model;
[0041]FIG. 11 is a schematic diagram of a control system and piping system according to embodiment 4 of the present utility model;
[0042]fig. 12 is a schematic diagram of a control system and a pipeline system according to embodiment 5 of the present utility model.
[0043]In the figure: 1. the fire extinguishing system comprises a housing, 2 a fire extinguishing agent storage vessel, 3 a power module, 4 a vessel valve, 5 a four-way connector, 6 a fire extinguishing agent discharge port, 7 a thermal head, 8 a first outlet pipe, 9 a second outlet pipe, 10 a manual integral solenoid valve, 101 a manual operating device, 11 a self-resetting contact switch, 12 a cover plate, 13 a control module, 131 an operating panel, 1311 a fire detector signal logic setting button, 1312 a fire emergency start/stop button, 1313 a response to an external fire extinguishing instruction setting button, 1314 a time delay start time setting button, 1315 a fire extinguishing device one-time on duration setting button, 1316 a key switch, 132 a display device, 1321 a display screen, 1322 a working state indicator, 1323 a pressure state indicator, 14 a smoke detector, 15 a flame detector and 16 a pressure sensor.
Detailed Description
[0044]The utility model is further described below by means of specific embodiments.
[0045]Example 1
[0046]Referring to fig. 1 to 6, the small-sized automatic fire extinguishing apparatus of the present utility model includes a housing 1, a fire extinguishing agent storage container 2, a pipe system, a control system, and a power module 3.
[0047]The fire extinguishing agent storage container 2 is used for storing fire extinguishing agent, and the outlet is connected with a container valve 4 for controlling the opening and closing of the outlet.
[0048]The pipeline system comprises a four-way joint 5, a pipeline, an electric control valve, a fire extinguishing agent releasing port 6 and a thermosensitive nozzle 7. The tubing forms two parallel outlet lines, a first outlet line 8 and a second outlet line 9. The first end of the four-way joint 5 is communicated with the outlet of the fire extinguishing agent storage container 2, the second end of the four-way joint is communicated with a first outlet pipeline 8 through an electric control valve, and the third end of the four-way joint is communicated with a second outlet pipeline 9; the other end of the first outlet pipeline 8 is communicated with a fire extinguishing agent releasing port 6; the other end of the second outlet pipeline 9 is connected with the thermosensitive nozzle 7.
[0049]The electric control valve adopts a manual-automatic electromagnetic valve 10, the manual-automatic electromagnetic valve 10 is normally closed, and is provided with a manual operation device 101 and a power-off reset function. The manual operation device 101 may be designed as a hand wheel, a wrench, a knob, or the like. The automatic-manual solenoid valve 10 is connected in series with a self-resetting contact switch 11 in a power supply loop, the self-resetting contact switch 11 is used for powering off the automatic-manual solenoid valve 10 when triggered, and the manual operation device 101 can only perform manual valve opening or closing operation when the automatic-manual solenoid valve 10 is powered off. The shell 1 is provided with an opening, a cover plate 12 for opening or closing the opening is arranged on the shell 1, the manual-automatic integrated electric control valve 10 and the self-resetting contact switch 11 are both arranged inside the shell 1, and the self-resetting contact switch 11 is triggered when the cover plate 12 is opened. Only when the cover plate 12 is opened, the operator can contact the manual operation device 101 of the manual electromagnetic valve 10, so that false triggering can be avoided.
[0050]The control system comprises a fire detection device, a pressure detection device, a control module 13 and an alarm device. The fire detection device is used for detecting whether a fire disaster occurs in the use environment; the pressure detection device is arranged on a pipeline at the rear end of the container valve 4 of the fire extinguishing agent storage container 2, specifically arranged at the fourth end of the four-way joint 5, and is used for detecting pressure signals in the installation pipeline so as to judge whether the internal pressure of the fire extinguishing agent storage container 2 is normal or not and whether the pipeline behind the container valve 4 of the fire extinguishing agent storage container 2 is in a completely closed state or not; the control module 13 is in communication connection with the fire detection device and the pressure detection device, is connected with and controls the electric control valve, and realizes the on-off control of the electric control valve by controlling the on-off of the power supply of the electric control valve. The fire detection device comprises two different types of fire detectors, namely a smoke detector 14 and a flame detector 15; the pressure detection means employs a pressure sensor 16. The control module 13 includes a controller, an operation panel 131 and a display device 132, where the controller is connected to and controls the alarm device. The controller adopts a singlechip or ARM controller, and can also adopt other types of controllers which can realize corresponding functions in the prior art. The operation panel 131 is provided with a fire detector signal logic mode setting key 1311, an emergency start/stop key 1312, a setting key 1313 for responding to an external fire extinguishing instruction, a delay start time setting knob 1314, a fire extinguishing device one-time on duration setting knob 1315 and a key switch 1316, which are all electrically connected with the controller. The emergency start/stop button 1312 is used to control the emergency opening and closing of the electrically controlled valve. The emergency start/stop button 1312 is installed under a protective cover that can be opened without tools to prevent malfunction. The key switch 1316 is used to turn off or activate the automatic fire extinguishing apparatus by a key, and only a person holding the key can reset the operation parameters of the apparatus by this operation. The display device 132 includes a display screen 1321, a working status indicator 1322, and a pressure status indicator 1323, which are all electrically connected to the controller, where the display screen 1321 is used to display various working parameters and status information of the automatic fire extinguishing device, including fire detection signals, externally input command signals, delay start time, and one-time start duration of the fire extinguishing device. The alarm device adopts a buzzer. The controller is used for collecting the output signal of the fire detection device to judge whether a fire disaster occurs, collecting the output signal of the pressure detection device to judge the states of the fire extinguishing agent storage container and the pipeline, controlling the alarm device to alarm when judging that the fire disaster occurs, and outputting an electric signal to control the electric control valve to release the fire extinguishing agent to extinguish the fire; or receiving an external command signal, and controlling the electric control valve according to the external command.
[0051]The power module 3 is used for converting 220V alternating current provided by an external power supply into multiple paths of direct current with different voltages to supply power for all power utilization elements in the pipeline system and the control system. The power module 3 includes an Uninterruptible Power Supply (UPS) and a DC-DC circuit, the input of the UPS is connected to an external ac power source, the output of the UPS is connected to the DC-DC circuit, and the UPS has a rechargeable battery that can be switched to supply power to each of the power consuming elements when the external power source is interrupted.
[0052]Referring to fig. 5 and 9, the automatic fire extinguishing apparatus of the present embodiment is placed on the ground or other flat surface, the housing 1 is a rectangular box with an upper opening, the top plate is provided as the cover plate 12, the operation panel 131 is mounted on the top plate of the housing 1, and the fire detector, the fire extinguishing agent releasing port 6 and the thermal nozzle 7 are mounted on the front side plate of the housing 1. In addition, the automatic fire extinguishing device can also be designed into a wall-mounted type, an overhead type or a buried type according to the actual use placement position.
[0053]Referring to fig. 1 to 6, the small-sized automatic fire extinguishing apparatus of the present utility model operates on the principle that:
[0054]the logic relationship between the detection signals of different types of fire detectors for judging whether a fire occurs is preset in the control program of the controller, and is generally set as logic AND or logic OR according to the actual application scene. Meanwhile, the delay time for starting the electric control valve when the fire disaster occurs is preset, and the one-time opening duration of the fire extinguishing device is well judged.
[0055]The automatic fire extinguishing device can detect whether fire occurs only in an automatic control working state. The conditions under which the automatic fire extinguishing device can release the fire extinguishing agent are:
[0056]1) The fire extinguishing agent storage container 2 stores fire extinguishing agent and has normal pressure;
[0057]2) The container valve 4 of the fire extinguishing agent storing container 2 has been opened;
[0058]3) The manual-automatic electromagnetic valve 10 and the thermosensitive nozzle 7 are normal, and the pipeline is not damaged.
[0059]The automatic fire extinguishing device can release the fire extinguishing agent in three ways: automatic release, manual release, heated release.
[0060]A. Automatically controlled release of fire extinguishing agent during operating conditions
[0061]The operator turns on the power switch to start the automatic fire extinguishing device, and the automatic fire extinguishing device automatically operates according to the default or set working parameters. The operator can then also reset the operating parameters. The automatic fire extinguishing device displays the working parameters and the equipment state of the equipment through the display screen 1321 and the indicator lights.
[0062]The fire detector continuously detects whether a fire occurs in the workplace. The controller receives the two fire detector signals and performs logical AND or logical OR operation according to preset logic to judge whether the condition for judging fire occurrence is met. When judging that a fire disaster does occur or when receiving an external linkage fire extinguishing instruction (when the automatic fire extinguishing device is set to respond to the external fire extinguishing instruction), the controller automatically executes the following working procedures:
[0063]1) Sending out an alarm signal and starting delay timing at the same time;
[0064]2) Outputting an alarm linkage signal to the outside;
[0065]3) When the time delay value reaches a set value, the controller opens the manual-automatic electromagnetic valve 10 to release the fire extinguishing agent, and when the opening time of the manual-automatic electromagnetic valve 10 reaches the set one-time opening time of the fire extinguishing device, the controller judges whether the fire disaster is extinguished according to the fire disaster detection device signal, and if the fire disaster is extinguished, the controller closes the manual-automatic electromagnetic valve 10 to stop releasing the fire extinguishing agent; if the fire is not extinguished beyond the set open time period, the controller controls the manual-automatic solenoid valve 10 to continue to open until the fire is extinguished, and the controller closes the manual-automatic solenoid valve 10 to stop releasing the extinguishing agent.
[0066]After the automatic fire extinguishing device automatically releases the fire extinguishing agent, an alarm signal and an alarm linkage signal are continuously sent until an operator performs reset operation on the controller.
[0067]After the staff arrives at the scene, the automatic fire extinguishing device is comprehensively checked, and relevant parts are adjusted, maintained and replaced, so that the automatic fire extinguishing device can be put into use again.
[0068]B. Manual control of the release of extinguishing agent:
[0069]whether the automatic fire extinguishing device is in an automatic working state or not, an operator can trigger the self-resetting contact switch 11 through opening the cover plate 12 to disconnect the manual-automatic electromagnetic valve 10, and can manually open or close the manual-automatic electromagnetic valve 10 through the manual operation device 101 to release or stop releasing the fire extinguishing agent.
[0070]When the automatic fire extinguishing apparatus is in an automatic operation state, an operator can press the emergency start/stop button 1312 at any time to open the automatically opened electric control valve to release the fire extinguishing agent, and close the automatically opened electric control valve to stop releasing the fire extinguishing agent.
[0071]C. The thermosensitive spray head is automatically opened and released when being heated:
[0072]whether the automatic fire extinguishing device is in an electrified working state or not, under the high-temperature action of fire, the glass balls of the thermosensitive nozzle 7 are broken or the fusible substances are melted, so that the automatic fire extinguishing device can be automatically opened to release the fire extinguishing agent.
[0073]When the small-sized automatic fire extinguishing apparatus of the present utility model is used, the fire extinguishing agent stored in the fire extinguishing agent storage container 2 is preferably selected in a proper type according to the use situation of the automatic fire extinguishing apparatus. The type of extinguishing agent is selected taking into account at least the following factors:
[0074]1) Considering the type of fire most likely to occur in the place of use of the automatic extinguishing device, taking as an example in an elevator car: fire occurring in the elevator car can be classified as an electrical fire, and a fire extinguishing agent suitable for the electrical fire is selected;
[0075]2) Considering the safety of personnel in the use place, the released fire extinguishing agent should be avoided from injuring the personnel, and taking an elevator car as an example: clean gas extinguishing agent is preferably selected in the closed elevator car, and CO2 extinguishing agent (having asphyxia effect on personnel) and dry powder extinguishing agent (entering eyes, mouth, nose and respiratory tract of people) are not suitable to be used.
[0076]Example 2
[0077]Referring to fig. 7, 8 and 9, this embodiment differs from embodiment 1 in that: the automatic fire extinguishing apparatus of this embodiment is placed on the ground or other flat surfaces, the casing 1 is a pentagonal box with a cross section similar to a triangle, and is particularly suitable for being placed in corners, the upper side is opened, the top plate is provided with the cover plate 12, the operation panel 131 is mounted on the top plate of the casing 1, and the fire detector, the fire extinguishing agent releasing port 6 and the thermal nozzle 7 are mounted on the front side plate of the casing 1. In addition, the control module 13 adopts a logic control circuit, which is used for forming a set logic mapping relation between an input signal and an output signal, so as to realize that an electric signal is output to control the electric control valve when a fire disaster occurs. The logic control circuit may adopt a logic and gate or a logic or gate according to the prior art according to practical application. The power module 3 comprises a rechargeable battery, an automatic power switching module and a DC-DC circuit, wherein the input end of the automatic power switching module is electrically connected with an external alternating current power supply and the rechargeable battery, the output end of the automatic power switching module is connected with the DC-DC circuit, and the automatic power switching module adopts the prior art.
[0078]Example 3
[0079]Referring to fig. 10, this embodiment differs from embodiment 1 in that: the pressure detection device adopts a pressure gauge, and the pressure gauge is used for displaying the internal pressure of the pressure pipeline in the fire extinguishing agent storage container 2 when the current container valve 4 is opened. The fire detection device adopts a composite fire detector.
[0080]Example 4
[0081]Referring to fig. 11, this embodiment differs from embodiment 1 in that: the small-sized automatic fire extinguishing device comprises two fire extinguishing agent storage containers 2 and a pipeline system. The pipeline system comprises two tee joints, a pipeline, an automatic-manual electromagnetic valve 10, a fire extinguishing agent releasing port 6 and a thermosensitive nozzle 7. The pipeline is formed with two parallel inlet pipelines and two parallel outlet pipelines, and the two inlet pipelines and the two outlet pipelines are mutually communicated. The two inlet pipelines are respectively communicated with the outlets of the two fire extinguishing agent storage containers in a one-to-one correspondence manner through three-way connectors, and the third end of the three-way connector is connected with the pressure sensor. An outlet pipeline is provided with an manual-automatic electromagnetic valve, and the outlet is communicated with a fire extinguishing agent releasing port; the outlet of the other outlet pipeline is connected with a thermosensitive spray head. The two inlet pipelines are respectively provided with a one-way valve, and the two fire extinguishing agent storage containers share two outlet pipelines, an automatic-manual electromagnetic valve, a fire extinguishing agent release port and a thermosensitive spray head, and are simultaneously controlled to be opened or closed.
[0082]Example 5
[0083]Referring to fig. 12, this embodiment differs from embodiment 1 in that: the small-sized automatic fire extinguishing device comprises two fire extinguishing agent storage containers 2 and two pipeline systems which are arranged in one-to-one correspondence with the two fire extinguishing agent storage containers 2, and the connection structure of the fire extinguishing agent storage containers 2 and the pipeline systems is the same as that of the embodiment 1. The pressure sensors 16 of the two pipeline systems and the manual-automatic electromagnetic valve 10 are respectively connected with the same controller, and the two manual-automatic electromagnetic valves 10 are connected with two self-resetting contact switches 11 which are fixed together and can only be opened and closed simultaneously. The two fire extinguishing agent storage containers 2 are each provided with a pipe system and are each controlled to be opened or closed.
[0084]Example 6
[0085]This embodiment differs from embodiment 1 in that: the electric control valve adopts an electromagnetic valve or an electric valve without manual control function, and simultaneously the self-reset contact switch 11 is canceled. The fire detection device comprises three different types of fire detectors, namely a temperature sensing detector, a smoke sensing detector and a flame detector. In addition, in the present embodiment, the fire extinguishing agent discharging port 6 of the first outlet pipe 8 and the thermal head 7 of the second outlet pipe 9 are communicated to the same outlet to discharge the fire extinguishing agent. The automatic fire extinguishing device of the embodiment is designed into a plurality of discrete components which are assembled and connected into a whole for use.
[0086]The foregoing is only a few embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the concept should be construed as infringement of the protection scope of the present utility model.
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