CN219533860U - Fire alarm control box and control circuit thereof - Google Patents
Fire alarm control box and control circuit thereof Download PDFInfo
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- CN219533860U CN219533860U CN202223452861.2U CN202223452861U CN219533860U CN 219533860 U CN219533860 U CN 219533860U CN 202223452861 U CN202223452861 U CN 202223452861U CN 219533860 U CN219533860 U CN 219533860U
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Abstract
The utility model discloses a fire alarm control box and a control circuit thereof, wherein the fire alarm control box comprises a main power circuit, a voltage conversion circuit and a fire alarm sensor; the main power supply circuit is connected with the voltage conversion circuit, and the voltage conversion circuit is connected with the fire alarm sensor connection circuit; the fire alarm sensor connecting circuit comprises a temperature sensor A, a temperature sensor B and an audible and visual alarm. According to the utility model, the control circuit is arranged in the control box and is connected with the fire alarm sensor, the fire alarm sensor is used for detecting the ambient temperature of the area to be protected, and when the ambient temperature changes, the audible and visual alarm is used for sending out an alarm signal to remind the fire. The utility model can monitor for 24 hours in all weather and has the advantages of convenient debugging and convenient maintenance.
Description
Technical Field
The utility model belongs to the technical field of circuit control, and particularly relates to a fire alarm control box and a control circuit thereof.
Background
The fire alarm is one of the most important and effective means for preventing fire, and has the function of timely giving an alarm when detecting a certain amount of smoke, dust and other fire precursors, and competing for disaster prevention or disaster prevention measures such as preventing fire from occurring, preventing fire spread, evacuating people, transferring property and the like as early as possible.
The application number is: patent of utility model "202020711698.9": the technical scheme recorded in the fire early warning circuit is as follows: a fire early warning circuit, comprising: the fire disaster sensing device comprises a fire disaster sensing module, a power supply control module and an alarm module. The power supply module is used for providing power for the fire sensing module and the alarm module and is arranged between the fire sensing module and the alarm module; the fire sensing module is used for detecting whether the temperature is abnormal or not to judge whether the risk of fire occurs or not, and the alarm module is used for alarming to remind a user when detecting that the risk of fire occurs. In the prior art, although the fire disaster can be detected through the fire disaster sensing module, the user can be reminded only through the alarm module, the fire disaster can not be reacted rapidly, and the loss is easy to cause.
Disclosure of Invention
The utility model aims to provide a fire alarm control box and a control circuit thereof, which are used for solving the problems that in the prior art, although a fire can be detected through a fire sensing module, a user can only be reminded through the alarm module, the fire can not be reacted quickly and loss is easy to cause.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a fire alarm control box comprises a box body, wherein a temperature controller, an indicator light, a power switch and a mode conversion button are arranged in the box body; wherein, the temperature controller is arranged in the middle of the box body; the temperature controller is used for detecting the change of the external environment temperature;
the indicator lamp comprises a power indicator lamp A1, a power indicator lamp A2, a mode indicator lamp A, a mode indicator lamp B, a weightlessness signal indicator lamp and a spraying signal indicator lamp; the weightlessness signal indicator lamp, the spraying signal indicator lamp, the mode indicator lamp A, the mode indicator lamp B, the power indicator lamp A1 and the power indicator lamp A2 are sequentially arranged from top to bottom;
the power switch comprises a switch K1 and a duplex switch; wherein, switch K1 and duplex switch set up the lower extreme at the box, and be provided with power indicator lamp A1 between switch K1 and the duplex switch, one side of duplex switch is provided with power indicator lamp A2.
According to the technical scheme, the side face of the box body is provided with the visual window, and the visual window is used for observing the inside of the box body.
A fire alarm control box control circuit comprises a main power supply circuit, a voltage conversion circuit and a fire alarm sensor connection circuit; the main power supply circuit is connected with the voltage conversion circuit, the voltage conversion circuit is used for carrying out step-down processing on the voltage output by the main power supply circuit, and the voltage conversion circuit is connected with the fire alarm sensor connecting circuit;
the fire alarm sensor connecting circuit comprises a temperature sensor A, a temperature sensor B and an audible and visual alarm; the temperature sensor A, the temperature sensor B and the audible and visual alarm are all connected with the output end of the voltage conversion circuit; the temperature sensor A and the temperature sensor B are used for detecting temperature and sending out alarm signals; the audible and visual alarm is used for audible and visual alarm.
According to the technical scheme, the main power supply circuit comprises a switch K1, a fuse FU1 and a power supply indicator lamp A1; the main power supply circuit comprises a live wire and a zero wire which are connected with an external power supply; the live wire and the zero wire are both connected with a switch K1; the other end of the switch K1 is connected with the fuse FU1 and the power indicator lamp A1; and fuse FU1 sets up on the live wire, and power indicator lamp A1 is parallelly connected with live wire and zero line.
According to the technical scheme, the control box further comprises a temperature controller connecting circuit, wherein the temperature controller connecting circuit comprises two temperature controllers, and the two temperature controllers are a temperature controller A and a temperature controller B respectively;
one end of an No. 8 terminal of the temperature controller A is connected with a fire wire of a main power circuit, and the other end of the No. 8 terminal of the temperature controller A is connected with an No. 8 terminal of the temperature controller B; one end of a No. 9 terminal of the temperature controller A is connected with a zero line of a main power circuit, and the other end of the No. 9 terminal of the temperature controller A is connected with a No. 9 terminal of the temperature controller B; the No. 5 terminal and the No. 6 terminal of the temperature controller A are connected with one end of the temperature sensor A, and the No. 7 terminal of the temperature controller A is connected with the other end of the temperature sensor A; the No. 11 terminal of the temperature controller A is connected with one end of a relay KA, and the other end of the relay KA is connected with the No. 11 terminal of the temperature controller B;
and the No. 5 terminal and the No. 6 terminal of the temperature controller B are connected with one end of the temperature sensor B, and the No. 7 terminal of the temperature controller B is connected with the other end of the temperature sensor B.
According to the technical scheme, the voltage conversion circuit comprises a buck rectifier, a power indicator lamp A2, a duplex switch, a storage battery and a fuse FU2, wherein the duplex switch comprises a switch K2 and a switch K3; one end of the buck rectifier is connected with the live wire and the zero wire of the main power supply circuit respectively, and the other end of the buck rectifier is connected with the fire alarm sensor;
the storage battery is connected in parallel with the buck rectifier, one end of the storage battery is connected with the positive electrode of the buck rectifier, the other end of the storage battery is connected with one end of the switch K2, and the other end of the switch K2 is connected with the negative electrode of the buck rectifier; the power indicator lamp A2 is connected with the buck rectifier in parallel; one end of a switch K3 is connected with the negative electrode of the buck rectifier, the other end of the switch K3 is connected with a fuse FU2, and the other end of the fuse FU2 is connected with a fire alarm sensor connecting circuit.
According to the technical scheme, the fire alarm sensor connecting circuit comprises a relay J, a relay JS, a relay J1, a switch K and a single-pole double-throw switch C;
one end of the relay J is connected with the voltage conversion circuit; the other end of the relay J is connected with the temperature sensor A and the temperature sensor B respectively;
one end of a relay JS contact JSA is respectively connected with two contacts NC and NO of a single-pole double-throw switch C; the NC is connected with one end of a switch K, the NO is connected with one end of a contact of a relay J, and the other end of a contact JSA of the relay JS, the other end of the switch K, the other end of the contact of the relay J and one end of a single-pole double-throw switch C are all connected with a voltage conversion circuit;
the public end of the contact NC of the relay JS contact JSA and the single-pole double-throw switch C and the contact NO is connected with one end of a relay JS coil; the other end of the relay JS coil is connected with an output public end;
the NC contact of the single-pole double-throw switch C is connected with one end of the mode indicator lamp A, the NO contact of the single-pole double-throw switch C is connected with one end of the mode indicator lamp B, and the common ends of the mode indicator lamp A and the mode indicator lamp B are respectively connected with the coil, the discharge signal output, the coil JS, the coil J1 and the output common end of the relay J;
the two ends of the coil of the relay J1 are respectively connected with the two ends of the coil JS;
the contact JSB of the relay JS, the contact of the relay J1, the public terminal power supply anode and the voltage conversion circuit are all connected with the public terminal power supply anode.
According to the technical scheme, the fire alarm sensor connecting circuit further comprises a weight loss alarm circuit, and the weight loss alarm circuit is used for detecting the weight of the fire extinguisher.
According to the technical scheme, the weightlessness alarm circuit comprises a weightlessness signal indicator lamp, a diode A, a diode B and an alarm;
one end of the diode A is connected with one end of the diode B, and the common end of the diode A and the common end of the diode B are connected with the weightlessness signal input; the other end of the diode A is connected with one end of a weightlessness signal indicator lamp, and the other end of the weightlessness signal indicator lamp is connected with a voltage conversion circuit; the other end of the diode B is connected with an alarm, and the other end of the alarm is connected with a voltage conversion circuit.
Compared with the prior art, the utility model has the following beneficial effects:
in the utility model, a power supply indicator lamp A1, a power supply indicator lamp A2, a mode indicator lamp A, a mode indicator lamp B, a weightlessness signal indicator lamp and a spraying signal indicator lamp are arranged in a box body; the power indicator lamp A1 and the power indicator lamp A2 are arranged below the box body and are arranged at the same horizontal position with the switch K1, so that the state of the switch K1 is conveniently indicated; the indication effect of the power indication lamp A1 and the power indication lamp A2 is improved.
The weightlessness signal indicator lamp and the emission signal indicator lamp are arranged below the box body, so that the weightlessness signal indicator lamp and the emission signal indicator lamp are more striking in indication, and a user can check the use states of the weightlessness signal indicator lamp and the emission signal indicator lamp conveniently.
The control circuit is installed in the box body and connected with the fire alarm sensor, the fire alarm sensor is used for detecting the ambient temperature of the area to be protected, and when the ambient temperature changes, the audible and visual alarm is used for sending out an alarm signal to remind the fire. The utility model can monitor for 24 hours in all weather and has the advantages of convenient debugging and convenient maintenance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
fig. 2 is a control circuit diagram of the present utility model.
The marks in the figure: 100-box, 200-temperature controller, 300-power indicator A1, 400-power indicator A2, 500-mode indicator A, 600-mode indicator B, 700-weightlessness signal indicator, 800-emission signal indicator, 900-switch K1, 110-duplex switch and 111-visual window.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
As shown in fig. 1, a fire alarm control box comprises a box body 100, wherein a temperature controller 200, an indicator light, a power switch and a mode conversion button are arranged in the box body 100; wherein, the temperature controller 200 is arranged in the middle of the box body 100; the thermostat 200 is used for detecting the change of the external environment temperature;
the indicator lamps comprise a power indicator lamp A1300, a power indicator lamp A2400, a mode indicator lamp A500, a mode indicator lamp B600, a weightless signal indicator lamp 700 and a discharge signal indicator lamp 800; wherein, the weightlessness signal indicator lamp 700, the blowout signal indicator lamp 800, the mode indicator lamp A500, the mode indicator lamp B600, the power indicator lamp A1300 and the power indicator lamp A2400 are sequentially arranged from top to bottom;
the power switch comprises a switch K1900 and a duplex switch 110; the switch K1900 and the duplex switch 110 are disposed at the lower end of the box 100, and a power indicator lamp a1300 is disposed between the switch K1900 and the duplex switch 110, and a power indicator lamp a2400 is disposed at one side of the duplex switch 110.
A visual window 111 is provided on a side surface of the case 100, and the visual window 111 is used for observing the condition of the indicator lamp inside the case 100.
The working principle of the utility model is as follows: the temperature sensor a and the temperature sensor B are installed in an area to be protected (for example, a factory production facility) to detect the ambient temperature. After the control box is installed, the control box is put into operation, and the area needing to be protected is monitored for 24 hours through the temperature sensor A and the temperature sensor B.
When the temperature of equipment in an area to be protected exceeds the set temperature (namely, the temperature of the temperature sensor A or the temperature sensor B exceeds 100 ℃), the audible and visual alarm system gives an alarm (namely, the audible and visual alarm output is switched on, and an audible and visual alarm device connected with the control box works), and at the moment, if the control box is placed in an automatic state, the emission signal output of the control box is switched on. For example, the control box is connected with an external fire blanket device and a carbon dioxide fire extinguisher, and when the spraying signal output of the control box is connected, the fire blanket and the carbon dioxide fire extinguisher are released to carry out fire extinguishing protection on the area to be protected.
If the opening mode of the controller is in a manual state, a manual starting button needs to be pressed, and the output of the spraying signal of the control box is connected. For example, the control box is connected with an external fire blanket device and a carbon dioxide fire extinguisher, and when the spraying signal output of the control box is connected, the fire blanket and the carbon dioxide fire extinguisher are released to carry out fire extinguishing protection on the area to be protected.
Example two
As shown in fig. 2, a fire alarm control box control circuit comprises a main power supply circuit, a voltage conversion circuit and a fire alarm sensor connection circuit; the main power supply circuit is connected with the voltage conversion circuit, the voltage conversion circuit is used for carrying out step-down processing on the voltage output by the main power supply circuit, and the voltage conversion circuit is connected with the fire alarm sensor connecting circuit;
the fire alarm sensor connecting circuit comprises a temperature sensor A, a temperature sensor B and an audible and visual alarm; the temperature sensor A, the temperature sensor B and the audible and visual alarm are all connected with the output end of the voltage conversion circuit; the temperature sensor A and the temperature sensor B are used for detecting temperature and sending out alarm signals; the audible and visual alarm is used for audible and visual alarm.
The control circuit is installed in the box body 100 and connected with the fire alarm sensor, the fire alarm sensor is used for detecting the ambient temperature of an area to be protected, and when the ambient temperature changes, the audible and visual alarm is used for sending an alarm signal to remind the fire. The utility model can monitor for 24 hours in all weather and has the advantages of convenient debugging and convenient maintenance.
Example III
This embodiment is a further refinement of embodiment one. The main power supply circuit comprises a switch K1900, a fuse FU1 and a power indicator lamp A1300; the main power supply circuit comprises a live wire and a zero wire which are connected with an external power supply; the live wire and the zero wire are both connected with a switch K1900; the other end of the switch K1900 is connected with the fuse FU1 and the power indicator lamp A1300; and fuse FU1 is disposed on the fire wire, and power indicator lamp a1300 is connected in parallel with the fire wire and the neutral wire.
The control box also comprises a temperature controller connecting circuit, the temperature controller connecting circuit comprises two temperature controllers 200, and the two temperature controllers 200 are a temperature controller A and a temperature controller B respectively;
one end of an No. 8 terminal of the temperature controller A is connected with a fire wire of a main power circuit, and the other end of the No. 8 terminal of the temperature controller A is connected with an No. 8 terminal of the temperature controller B; one end of a No. 9 terminal of the temperature controller A is connected with a zero line of a main power circuit, and the other end of the No. 9 terminal of the temperature controller A is connected with a No. 9 terminal of the temperature controller B; the No. 5 terminal and the No. 6 terminal of the temperature controller A are connected with one end of the temperature sensor A, and the No. 7 terminal of the temperature controller A is connected with the other end of the temperature sensor A; the No. 11 terminal of the temperature controller A is connected with one end of a relay KA, and the other end of the relay KA is connected with the No. 11 terminal of the temperature controller B;
and the No. 5 terminal and the No. 6 terminal of the temperature controller B are connected with one end of the temperature sensor B, and the No. 7 terminal of the temperature controller B is connected with the other end of the temperature sensor B.
The voltage conversion circuit comprises a buck rectifier, a power indicator lamp A2400, a switch K2, a switch K3, a storage battery and a fuse FU2; one end of the buck rectifier is connected with the live wire and the zero wire of the main power supply circuit respectively, and the other end of the buck rectifier is connected with the fire alarm sensor;
the storage battery is connected in parallel with the buck rectifier, one end of the storage battery is connected with the positive electrode of the buck rectifier, the other end of the storage battery is connected with one end of the switch K2, and the other end of the switch K2 is connected with the negative electrode of the buck rectifier; the power indicator lamp A2400 is connected with the buck rectifier in parallel; one end of a switch K3 is connected with the negative electrode of the buck rectifier, the other end of the switch K3 is connected with a fuse FU2, and the other end of the fuse FU2 is connected with a fire alarm sensor connecting circuit.
The fire alarm sensor connecting circuit comprises a relay J, a relay JS, a relay J1, a switch K and a single-pole double-throw switch C;
one end of the relay J is connected with the voltage conversion circuit; the other end of the relay J is connected with the temperature sensor A and the temperature sensor B respectively;
one end of a relay JS contact JSA is respectively connected with two contacts NC and NO of a single-pole double-throw switch C; the NC is connected with one end of a switch K, the NO is connected with one end of a contact of a relay J, and the other end of a contact JSA of the relay JS, the other end of the switch K, the other end of the contact of the relay J and one end of a single-pole double-throw switch C are all connected with a voltage conversion circuit;
the public end of the contact NC of the relay JS contact JSA and the single-pole double-throw switch C and the contact NO is connected with one end of a relay JS coil; the other end of the relay JS coil is connected with an output public end;
the NC contact of the single-pole double-throw switch C is connected with one end of the mode indicator lamp A500, the NO contact of the single-pole double-throw switch C is connected with one end of the mode indicator lamp B600, and the common end of the mode indicator lamp A500 and the common end of the mode indicator lamp B600 are respectively connected with the coil, the spray signal output, the coil JS, the coil J1 and the output common end of the relay J;
further, an indicator lamp A3 is arranged between the common end of the mode indicator lamp a500 and the common end of the mode indicator lamp B600 and the discharge signal output, two ends of the indicator lamp A3 are respectively connected with the common end of the mode indicator lamp a500 and the common end of the mode indicator lamp B600 and the discharge signal output, and the indicator lamp A3 is used for displaying whether the discharge signal output is on or not.
The two ends of the coil of the relay J1 are respectively connected with the two ends of the coil JS;
the contact JSB of the relay JS, the contact of the relay J1, the public terminal power supply anode and the voltage conversion circuit are all connected with the public terminal power supply anode.
The fire alarm sensor connecting circuit further comprises a weightlessness alarm circuit, and the weightlessness alarm circuit is used for detecting the weight of the carbon dioxide fire extinguisher.
The weightlessness alarm circuit comprises a weightlessness signal indicator 700, a diode A, a diode B and an alarm;
one end of the diode A is connected with one end of the diode B, and the common end of the diode A and the common end of the diode B are connected with the weightlessness signal input; the other end of the diode A is connected with one end of the weightlessness signal indicator lamp 700, and the other end of the weightlessness signal indicator lamp 700 is connected with the voltage conversion circuit; the other end of the diode B is connected with an alarm, and the other end of the alarm is connected with a voltage conversion circuit.
Further, the weight loss signal input is external signal input, and can be set according to actual use conditions, for example, the weight sensor is used for detecting the weight of the carbon dioxide fire extinguisher, if the weight of the carbon dioxide fire extinguisher is lower than the set weight, the weight loss signal input is conducted, the weight loss alarm circuit is connected, and an alarm is sent to remind the carbon dioxide fire extinguisher of leakage.
Further, all electronic components in the present utility model are conventional devices, and are not described herein.
The working principle of the utility model is as follows:
the L end of the main power supply circuit is connected with a live wire of the mains supply, the N end of the main power supply is connected with a zero line of the mains supply, and the main power supply circuit is connected to the mains supply.
The switch K1900 is arranged on the main power supply circuit, the switch K1900 is a main power supply switch, the on-off of the circuit is controlled, the fuse FU1 is arranged on the main power supply circuit, and the fuse FU1 is used for protecting the circuit and preventing the circuit from overload; and the main power circuit is also provided with a temperature controller A and a temperature controller B, the temperature controller A and the temperature controller B are respectively connected with the temperature sensor A and the temperature sensor B, and the temperature controller A and the temperature controller B are respectively used for displaying the temperatures read by the temperature sensor A and the temperature sensor B.
The temperature sensor A transmits the detected ambient temperature to the temperature controller A, the temperature sensor B transmits the detected ambient temperature to the temperature controller B, and when the ambient temperature value transmitted to the temperature controller A or the temperature controller B exceeds a set value (for example, 100 ℃), the relay KA is powered on, so that the COM1 is connected with the power supply A, or the COM2 is connected with the power supply B, and a fire alarm sensor connecting circuit is connected, so that the fire alarm sensor connecting circuit acts.
The main power supply circuit is also provided with a step-down rectifier which steps down 220V three-phase power into 24V household power to supply power for other circuits.
When the control circuit is in an automatic mode;
the single-pole double-throw switch C is positioned at the NO end; when the temperature detected by the temperature sensor A or the temperature sensor B is higher than a set temperature (for example, 100 ℃), the relay KA is powered on, so that the COM1 is connected with the power supply A or the COM2 is connected with the power supply B; a control signal is input from COM1 or COM2, a coil of a relay J is connected, the relay J is electrified, a switch of the relay J is connected, then, coils of a relay JS and the relay J1 are connected, the relay JS and the relay J1 are electrified, and accordingly, a switch JSA and a switch JSB of the relay JS are connected, an external device (such as a carbon dioxide fire extinguisher) connected with the relay JS is connected, and the external device acts; the relay J1 is powered on, and the switch J1 is turned on, so that the audible and visual alarm connected with the relay J1 gives an alarm.
When the control circuit is in an automatic mode, the mode indicator lamp B600 of the single-pole double-throw switch C is turned on, the display control circuit is in an automatic control state, the mode indicator lamp B600 is also connected with the discharge signal indicator lamp 800, and the discharge signal indicator lamp 800 is used for indicating the discharge state.
When the control circuit is in manual mode
When the temperature detected by the temperature sensor A or the temperature sensor B is higher than a set temperature (for example, 100 ℃), the relay KA is electrified to switch on the COM1 and the power supply A or switch on the COM2 and the power supply B, at the moment, the switch K needs to be manually pressed down to switch on the coils of the relay JS and the relay J1 so as to enable the relay JS and the relay J1 to be electrified, and then the switch JSA and the switch JSB of the relay JS are switched on so as to enable an external device connected with the relay JS to be switched on, so that the external device acts; the relay J1 is powered on, and the switch J1 is turned on, so that the audible and visual alarm connected with the relay J1 gives an alarm.
When the control circuit is in a manual mode, the mode indicator lamp A500 of the single-pole double-throw switch C is turned on, the display control circuit is in a manual control state, the mode indicator lamp A500 is also connected with the discharge signal indicator lamp 800, and the discharge signal indicator lamp 800 is used for indicating the discharge state.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (9)
1. A fire alarm control box, comprising a box body (100), characterized in that: a temperature controller (200), an indicator light, a power switch and a mode switching button are arranged in the box body (100); wherein, the temperature controller (200) is arranged in the middle of the box body (100);
the indicator lamps comprise a power indicator lamp A1 (300), a power indicator lamp A2 (400), a mode indicator lamp A (500), a mode indicator lamp B (600), a weightlessness signal indicator lamp (700) and a spraying signal indicator lamp (800); wherein the weightlessness signal indicator lamp (700) and the discharge signal indicator lamp (800) are arranged at the upper part of the box body (100); the mode indicator lamp A (500) and the mode indicator lamp B (600) are arranged in the middle of the box body (100); the power indicator lamp A1 (300) and the power indicator lamp A2 (400) are arranged at the lower part of the box body (100);
the power switch comprises a switch K1 (900) and a duplex switch (110); wherein, switch K1 (900) and duplex switch (110) set up the lower extreme at box (100), and be provided with power indicator lamp A1 (300) between switch K1 (900) and duplex switch (110), one side of duplex switch (110) is provided with power indicator lamp A2 (400).
2. A fire alarm control box as defined in claim 1, wherein: a visual window (111) is arranged on the front surface of the box body (100), and the visual window (111) is used for observing the inside of the box body (100).
3. A control circuit provided in the fire alarm control box according to claim 1 or 2, characterized in that: the fire alarm device comprises a main power supply circuit, a voltage conversion circuit and a fire alarm sensor connection circuit; the main power supply circuit is connected with the voltage conversion circuit, the voltage conversion circuit is used for carrying out step-down processing on the voltage output by the main power supply circuit, and the voltage conversion circuit is connected with the fire alarm sensor connecting circuit;
the fire alarm sensor connecting circuit comprises a temperature sensor A, a temperature sensor B and an audible and visual alarm; the temperature sensor A, the temperature sensor B and the audible and visual alarm are all connected with the output end of the voltage conversion circuit; the temperature sensor A and the temperature sensor B are used for detecting the ambient temperature of an area to be protected and sending out an alarm signal; the audible and visual alarm is used for audible and visual alarm.
4. A control circuit according to claim 3, wherein: the main power supply circuit comprises a switch K1 (900), a fuse FU1 and a power indicator lamp A1 (300); the main power supply circuit comprises a live wire and a zero wire which are connected with an external power supply; the live wire and the zero wire are connected with a switch K1 (900); the other end of the switch K1 (900) is connected with the fuse FU1 and the power indicator lamp A1 (300); and fuse FU1 is disposed on the fire wire, and power indicator lamp A1 (300) is connected in parallel with the fire wire and the neutral wire.
5. A control circuit according to claim 3, wherein: the control box also comprises a temperature controller connecting circuit, the temperature controller connecting circuit comprises two temperature controllers (200), and the two temperature controllers (200) are a temperature controller A and a temperature controller B respectively;
one end of an No. 8 terminal of the temperature controller A is connected with a fire wire of a main power circuit, and the other end of the No. 8 terminal of the temperature controller A is connected with an No. 8 terminal of the temperature controller B; one end of a No. 9 terminal of the temperature controller A is connected with a zero line of a main power circuit, and the other end of the No. 9 terminal of the temperature controller A is connected with a No. 9 terminal of the temperature controller B; the No. 5 terminal and the No. 6 terminal of the temperature controller A are connected with one end of the temperature sensor A, and the No. 7 terminal of the temperature controller A is connected with the other end of the temperature sensor A; the No. 11 terminal of the temperature controller A is connected with one end of a relay KA, and the other end of the relay KA is connected with the No. 11 terminal of the temperature controller B;
and the No. 5 terminal and the No. 6 terminal of the temperature controller B are connected with one end of the temperature sensor B, and the No. 7 terminal of the temperature controller B is connected with the other end of the temperature sensor B.
6. A control circuit according to claim 3, wherein: the voltage conversion circuit comprises a buck rectifier, a power indicator lamp A2 (400), a duplex switch (110), a storage battery and a fuse FU2, wherein the duplex switch (110) comprises a switch K2 and a switch K3; one end of the buck rectifier is connected with the live wire and the zero wire of the main power supply circuit respectively, and the other end of the buck rectifier is connected with the fire alarm sensor;
the storage battery is connected in parallel with the buck rectifier, one end of the storage battery is connected with the positive electrode of the buck rectifier, the other end of the storage battery is connected with one end of the switch K2, and the other end of the switch K2 is connected with the negative electrode of the buck rectifier; the power indicator lamp A2 (400) is connected with the buck rectifier in parallel; one end of a switch K3 is connected with the negative electrode of the buck rectifier, the other end of the switch K3 is connected with a fuse FU2, and the other end of the fuse FU2 is connected with a fire alarm sensor connecting circuit.
7. A control circuit according to claim 3, wherein: the fire alarm sensor connecting circuit comprises a relay J, a relay JS, a relay J1, a switch K and a single-pole double-throw switch C;
one end of the relay J is connected with the voltage conversion circuit; the other end of the relay J is connected with the temperature sensor A and the temperature sensor B respectively;
one end of a relay JS contact JSA is respectively connected with two contacts NC and NO of a single-pole double-throw switch C; the NC is connected with one end of a switch K, the NO is connected with one end of a contact of a relay J, and the other end of a contact JSA of the relay JS, the other end of the switch K, the other end of the contact of the relay J and one end of a single-pole double-throw switch C are all connected with a voltage conversion circuit;
the public end of the contact NC of the relay JS contact JSA and the single-pole double-throw switch C and the contact NO is connected with one end of a relay JS coil; the other end of the relay JS coil is connected with an output public end;
the NC contact of the single-pole double-throw switch C is connected with one end of the mode indicator lamp A (500), the NO contact of the single-pole double-throw switch C is connected with one end of the mode indicator lamp B (600), and the common ends of the mode indicator lamp A (500) and the mode indicator lamp B (600) are respectively connected with the coil, the spraying signal output, the coil JS, the coil J1 and the output common end of the relay J;
the two ends of the coil of the relay J1 are respectively connected with the two ends of the coil JS;
the contact JSB of the relay JS, the contact of the relay J1 and the voltage conversion circuit are also connected with the positive electrode of the public terminal power supply.
8. A control circuit according to claim 3, wherein: the fire alarm sensor connecting circuit further comprises a weightlessness alarm circuit, and the weightlessness alarm circuit is used for detecting the weight of the fire extinguisher.
9. The control circuit of claim 8, wherein: the weightlessness alarm circuit comprises a weightlessness signal indicator lamp (700), a diode A, a diode B and an alarm;
one end of the diode A is connected with one end of the diode B, and the common end of the diode A and the common end of the diode B are connected with the weightlessness signal input; the other end of the diode A is connected with one end of a weightlessness signal indicator lamp (700), and the other end of the weightlessness signal indicator lamp (700) is connected with a voltage conversion circuit; the other end of the diode B is connected with an alarm, and the other end of the alarm is connected with a voltage conversion circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223452861.2U CN219533860U (en) | 2022-12-23 | 2022-12-23 | Fire alarm control box and control circuit thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223452861.2U CN219533860U (en) | 2022-12-23 | 2022-12-23 | Fire alarm control box and control circuit thereof |
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| Publication Number | Publication Date |
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| CN219533860U true CN219533860U (en) | 2023-08-15 |
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| CN202223452861.2U Active CN219533860U (en) | 2022-12-23 | 2022-12-23 | Fire alarm control box and control circuit thereof |
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| CN (1) | CN219533860U (en) |
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