一种小型自动灭火装置

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。

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.