WO2013182014A1

WO2013182014A1 - Activation apparatus for portable fire extinguisher

Info

Publication number: WO2013182014A1
Application number: PCT/CN2013/076620
Authority: WO
Inventors: 卢文龙
Original assignee: 陕西坚瑞消防股份有限公司
Priority date: 2012-06-07
Filing date: 2013-06-02
Publication date: 2013-12-12
Also published as: CN202605590U

Abstract

Disclosed is an activation apparatus for a portable fire extinguisher, wherein by means of establishing a flashing warning circuit (3) and an audio warning circuit (5), after pulling out a security switch (2), a power supply loop is turned on, the flashing warning circuit (3) and the audio warning circuit (5) operate, emitting audio and light warnings to alert personnel in the vicinity to take care of a fire hazard and evacuate in a timely manner, and also to prevent false activation by non-relevant personnel. Furthermore, adding a time delay activation circuit (4) ensures that after personnel have finished evacuating, an emergency button is pressed, and the time delay activation circuit (4) cuts in with a time delay of 3-10 seconds, activating an ignition end terminal (6) of the fire extinguisher to put out the fire. In this way, when a fire occurs, it is possible to ensure that personnel in the vicinity can be pre-warned and ensure the safe activation of the fire extinguisher. By means of a humanized design, the function of the activation apparatus of the fire extinguisher is increased and safety performance is improved.

Description

Starting device for portable fire extinguisher

TECHNICAL FIELD The present invention relates to the field of fire protection, and in particular to a starting device for a portable fire extinguisher. BACKGROUND OF THE INVENTION With the rapid development of the economy, people's awareness of fire protection is also increasing. A small portable fire extinguisher has been widely recognized in the market, but these fire extinguishers are simply activated by a start button, have a single function, and immediately ignite after starting. The medicine column sprays the medicine, there is no safety reminder to the surrounding personnel, and there is no delay function. As long as the medicine is started within a few seconds after the start, the fire will occur, and there is no warning effect to the surrounding people when the fire is not evacuated. It may hurt nearby people. SUMMARY OF THE INVENTION In view of the problems in the prior art, the present invention provides a boot device for a portable fire extinguisher having a safety alert function and a delayed start function.

The technical solution adopted by the utility model is:

A starting device for a portable fire extinguisher, comprising:

a cutout, connected to a power source;

a flashing alarm circuit coupled between the safety switch and a negative pole of the power source;

An audible alarm circuit is coupled between the safety switch and a negative pole of the power source;

The delay start circuit has one end coupled to the safety switch and the other end connected to the ignition head terminal of the fire extinguisher.

The delay start circuit includes: a 555 chip, a thyristor, a triode, a delay capacitor, an adjustable resistor, an emergency button, a first filter capacitor, a second filter capacitor, a first resistor, and a second resistor; The first pin and the eighth pin are connected between the safety switch and the negative pole of the power supply, and the sixth pin and the seventh pin are coupled to the safety switch through the first resistor, and are connected to the first filter capacitor through the first filter capacitor The negative pole of the power supply, the fourth pin is coupled to the safety switch, the fifth pin is grounded through the second filter capacitor, the third pin is connected to the G pole of the thyristor, and the second pin is connected to the emitter or collector of the triode; The A pole of the thyristor is coupled to the safety switch, and the K pole is connected to the ignition head terminal;

One end of the emergency button is coupled to the safety switch, and the other end is connected to the base of the triode through a second resistor;

The adjustable resistor and the delay capacitor are connected in parallel between the second resistor and the ground;

The collector or emitter of the transistor is grounded.

Wherein, the flashing alarm circuit comprises a light emitting diode and a third resistor connected in series between the safety switch and the negative pole of the power source.

The sound alarm circuit includes a 9561 chip, an NPN transistor, and a horn;

One of the pins of the 9561 chip is coupled to the safety switch, and the other pin is coupled to the base of the NPN transistor;

One end of the horn is coupled to the safety switch, and the other end is connected to the collector of the NPN transistor; the emitter of the NPN transistor is connected to the negative pole of the power supply to form an alarm circuit.

A storage capacitor is further coupled between the safety switch and the negative pole of the power source.

The starting device of the portable fire extinguisher of the utility model establishes a flashing alarm circuit and an audible alarm circuit, and after the safety switch is pulled out, the power circuit is turned on, the flashing alarm circuit, the audible alarm circuit works, and an audible and visual alarm is issued to remind the surrounding personnel Pay attention to the danger of fire, timely evacuation, and prevent unintentional personnel from starting up by mistake. The utility model also increases the delay start circuit to ensure that the emergency button is pressed after the evacuation is completed, and the delay start circuit starts to work, after the delay of 3-lOs When the fire extinguisher is activated, the fire extinguisher is activated to extinguish the fire. This ensures that the surrounding personnel can be alerted to the fire and the fire can be safely started. The humanized design increases the function of the fire extinguisher and improves the safety. . In addition, the utility model has the advantages of small size, simple and reliable structure and convenient installation. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view of Embodiment 1 of the present invention. detailed description: The following is a detailed description of the start control circuit of the portable fire extinguisher of the present invention in conjunction with a specific embodiment:

Example 1

As can be seen from Fig. 1, the starting device in the embodiment is mainly composed of a power source 1, a safety switch 2, a flashing alarm circuit 3, an audible alarm circuit 5, and a delay starting circuit 4 connected to each other.

The power supply 1 adopts a button battery of the type BT2032, the positive pole of the battery is connected to the safety switch 2, and a storage capacitor C3 of lOOuF is connected between the current output end of the safety switch 2 and the negative pole of the battery, when the circuit is connected, The storage capacitor C3 starts to charge, and when the charge is saturated, it starts to release, which can increase the starting ability of the starting device.

The flashing alarm circuit 3 is composed of a third resistor R3 of the light emitting diodes LED3 and 10K. The light emitting diode LED3 and the third resistor R3 are connected in series between the safety switch 2 and the battery negative pole. After the safety switch 2 is pulled out, the current is passed from the battery. The switch 2 flows through the LED 3 and the third resistor R3 back to the negative pole of the battery to form a closed loop, so that the LED 3 emits an optical signal to provide an early warning function.

The delay start circuit 4 is mainly composed of 555 chip ul, thyristor Ql, PNP transistor Q2, lOOuF delay capacitor C4, 1M adjustable resistor R4, emergency button SW-PB, 10uF first filter capacitor Cl, 100pF second The first resistor R1 of the filter capacitors C2, 10K and the second resistor R2 of the 4K are connected.

Wherein: the first pin of the 555 chip ul is connected to the negative pole of the battery, and the eighth pin is coupled to the safety switch 2, thereby ensuring that the chip is connected to the power supply 1, forming a loop, and the sixth pin and the seventh pin pass the first a resistor R1 is coupled to the safety switch 2, and is connected to the negative pole of the battery through the first filter capacitor C1. When the circuit is turned on, the instantaneous current of the third pin can be pulled down to keep the low frequency instantaneously; The pin is coupled to the safety switch 2, and the fifth pin is grounded through the second filter capacitor C2 to ensure stable operation of the circuit; the A pole of the thyristor Q1 is coupled to the safety switch 2, and the K pole and the ignition head terminal 6 of the fire extinguisher Connected, the G pole is connected to the third pin of the chip; the emitter of the PNP transistor Q2 is connected to the second pin of the chip, the collector is grounded, and the base is connected to the emergency button SW-PB through the second resistor R2, the emergency button SW The other end of the -PB is coupled to the safety switch 2, one end of the adjustable resistor R4 is coupled to the second resistor R2, and the other end is grounded, and the delay capacitor is connected in parallel with the adjustable resistor R4. Thus, when the emergency button SW-PB is pressed, the electricity When the circuit is connected, the current flows from the safety switch 2 through the emergency button SW-PB and the second resistor R2. By adjusting the voltage divider of the adjustable resistor R4, the delay capacitor is charged, and the base of the PNP transistor Q2 is low. Pull down the frequency of the second pin connected to the emitter, so that the second pin forms a low frequency, the third pin's frequency is pulled low, the gate G of the thyristor Q1 is low, and the thyristor Q1 remains. Disconnected state, until the delay capacitor is charged, the base of PNP transistor Q2 forms 髙 frequency, the transistor is disconnected, the second pin is 髙, the third pin forms the forward trigger current, and the thyristor Q1 breaks down. The connection to the fire extinguisher head 6 is turned on so that the ignition circuit is turned on and the fire extinguisher is activated.

The sound alarm circuit 5 is connected to the amplifier and the horn LSI through the model 9561 to form a loop, thereby generating an audible alarm. Specifically, the amplifier adopts the NPN transistor Q3 of the type 2N3904, and the connection of the 9561 chip u2 is the same as the prior art. That is, the first pin and the eighth pin are coupled to the safety switch 2, the fourth pin is connected to the base of the NPN transistor Q3, one end of the speaker LSI is coupled to the safety switch 2, and the other end is connected to the NPN transistor Q3. On the collector, the emitter of the NPN transistor Q3 is connected to the cathode of the power source 1 to form a loop of the entire audible alarm circuit 5.

The working process of the utility model is as follows: After the fire is found, first take the fire extinguisher and pull off the safety pull ring, the safety switch 2 is turned on and the power supply 1 circuit is turned on, the flashing alarm circuit 3, the sound alarm circuit 5 works, and the sound and light alarm is issued. To remind the surrounding personnel to be aware of the danger of fire, timely evacuation, can also prevent unintentional personnel from starting up by mistake. At this time, press the emergency button SW-PB, the delay start circuit 4 starts to work, and after the delay of 3-lOs, start the fire extinguisher ignition head. Fire extinguishing is implemented, and the delay time can adjust the resistance value of the adjustable resistor R4 according to actual needs.

Example 2

The difference in this embodiment is that the triode in the delay starting circuit 4 is selected from the NPN transistor Q3, and other electronic components and their connections are the same as in the first embodiment.

The above embodiment is only two specific embodiments of the start control device for the portable fire extinguisher of the present invention, but it is not limited thereto, and all other embodiments obtained by those skilled in the art without creative labor are provided. , all belong to the scope of protection of the utility model.

Claims

claims

1. A starting device for a portable fire extinguisher, characterized in that: the device includes:

Safety switch (2), connected to the power supply (1);

Flash alarm circuit (3), coupled between the safety switch (2) and the negative pole of the power supply (1); Sound alarm circuit (5), coupled between the safety switch (2) and the negative pole of the power supply (1) time; one end of the delayed start circuit (4) is coupled to the safety switch (2), and the other end is connected to the ignition head terminal (6) of the fire extinguisher.

2. The starting device of a portable fire extinguisher according to claim 1, characterized in that: the delayed starting circuit (4) includes: 555 chip, thyristor, triode, delay capacitor, adjustable resistor, emergency button, first filter capacitor, second filter capacitor, first resistor and second resistor;

The first and eighth pins of the 555 chip are connected between the safety switch (2) and the negative electrode of the power supply (1), and the sixth and seventh pins are coupled to the safety switch (2) through the first resistor. connected, and connected to the negative pole of the power supply (1) through the first filter capacitor, the fourth pin is coupled to the safety switch (2), the fifth pin is grounded through the second filter capacitor, and the third pin is connected to the inter-transistor The G terminal is connected, and the second pin is connected to the emitter or collector of the triode;

The A pole of the thyristor is coupled to the safety switch (2), and the K pole is connected to the ignition head terminal (6) of the fire extinguisher;

One end of the emergency button is coupled to the safety switch (2), and the other end is connected to the base of the triode through a second resistor;

The adjustable resistor and the delay capacitor are connected in parallel between the second resistor and ground;

The collector or emitter of the triode is connected to ground.

3. The starting device of the portable fire extinguisher according to claim 2, characterized in that: the flash alarm circuit (3) includes a light-emitting diode and a third LED connected in series between the safety switch (2) and the negative electrode of the power supply (1). Three resistors.

4. The starting device of the portable fire extinguisher according to claim 3, characterized in that: the sound alarm circuit (5) includes a 9561 chip, an NPN transistor and a horn;

One of the pins of the 9561 chip is coupled to the safety switch (2), and the other pin is coupled to the NPN The base connection of the triode;

One end of the speaker is coupled to the safety switch (2), and the other end is connected to the collector of the NPN transistor; the emitter of the NPN transistor is connected to the negative pole of the power supply (1) to form an alarm loop.

5. The starting device of a portable fire extinguisher according to any one of claims 1 to 4, characterized in that: an energy storage capacitor (C3) is coupled between the safety switch (2) and the negative electrode of the power supply (1). ).