KR102334037B1 - Temperature alarming and automatically electric breaking circuit - Google Patents

Abstract

Two switches connected in series operate at different surrounding temperatures, an alarm operates when the set temperature is low, and a circuit is configured using a resistance so that the circuit can look as if an electric leakage had occurred when the set temperature is high, thereby causing an alarm to go off because of overheating when the confined inside of the main body is overheated to enable a response in advance and allowing the main power to look as if an electric leakage had occurred to enable a response if no measure is taken. Specifically, by adding at least one auxiliary blocking circuit consisting of two switches, each auxiliary blocking circuit can be mounted on many divisions of a space to be used safely and conveniently. In addition, by adding a condenser to the blocking circuit, a constant circuit can be maintained using charging current when the main power is grounded to a neutral phase, thereby enabling safer and more convenient use.

Description

Overheat alarm and automatic power-off

The present invention relates to an overheat alarm and automatic power cut-off device, and more particularly, a shut-off circuit configured to obtain an earth leakage effect is installed in a main power circuit breaker capable of cutting off the main power, and when the first preset temperature is reached, first When an alarm is made and the second set temperature higher than the first set temperature is reached after the alarm, the main power is consumed using the resistor to make it look like a short circuit has occurred so that action can be taken before a fire occurs.

In order to prevent and extinguish fires that can occur in a limited space, such as devices installed in a relatively small space, for example, LED signage, bus information information signboard (BIT), outdoor lighting or signage, and heating and cooling equipment. , as shown in the following (Patent Document 1) to (Patent Document 3), a fire alarm or fire extinguishing device is manufactured and used in various forms.

(Patent Document 1) Korea Patent Publication No. 10-2018-0125071

It relates to a fire alarm air conditioner system capable of detecting a fire and warning to the outside, wherein, in a device having an inlet and an outlet, a ring having a first opening through the center and having spaces formed on both sides of the first opening shaped case; a ring-shaped cover coupled to the front of the case and having a second opening in the center that communicates with the first opening; Rotating units each having a fan and accommodated in the space; an image sensor that detects low-intensity light; gas sensor for gas detection; a temperature sensor for temperature sensing; a control unit for comprehensively determining whether or not a fire has occurred by comparing the electrical signals received from the image sensor, the gas sensor, and the temperature sensor with a reference value set for fire characteristics; a memory for storing the reference value; and a communication interface unit connected to an external device through a network to perform wired/wireless communication, wherein the air introduced through the inlet by driving the fan is discharged to the outlet through the space, the first opening and the The second opening may be discharged to an internal space through which the hole passes.

(Patent Document 2) Korean Patent No. 10-1923940

It is an electric sign board that transmits various information inputted using LED light for the convenience of the public. In particular, if a fire occurs in a certain part of the electric sign board, it detects it and takes immediate action to prevent the fire from spreading to the entire electronic sign board. It relates to an electric signboard having a fire detection function by a sensor. The present invention in order to solve the above object; a body member having a space therein; a screen member for visually transmitting various information according to a signal input from the front of the body member to the outside by emitting light using a plurality of LEDs; A control panel is connected so as to send and receive electrical signals to and from the screen member. In the event of a fire, a fire smoke sensor is used to provide a signal to detect fire to notify the fact of a fire, and control the operation of the screen member using the control panel Consists of a member.

(Patent Document 3) Korean Patent No. 10-1895849

A calibration, transmission and sensing-based LED signage fire self-suppression and alarm system is disclosed. The LED signboard fire self-suppression and alarm system according to an embodiment uses at least one of an LED module and a first power supply supplying power to the LED module, a temperature sensor, a humidity sensor, and a smoke sensor. The LED signboard including an environment sensing unit to detect and the environmental information detected through the environment sensing unit are analyzed individually or in combination to determine the fire abnormality and fire occurrence on the LED signboard, and if the fire is in the stage of fire, environmental information and alarm signals and a control device that cuts off the power supply to the LED module after transmitting it to the management server, and a power supply device that provides system driving power.

However, the existing fire suppression system has the following problems.

(1) Existing fire suppression systems are difficult to warn before a fire occurs.

(2) This has the effect of preventing the occurrence of a fire in advance by giving an alarm in a situation where a fire is likely to occur, and even though the switchboard or control panel can be safely used, the damage caused by a fire is further increased.

(3) On the other hand, in the event of a fire, the main power is cut off and the necessary power cannot be supplied, which may cause problems with the device.

(4) In addition, as the main power is cut off, there is a risk of damage or malfunction of other electrical/electronic devices connected to the main power due to the impact. In particular, as the main power is repeatedly cut off, the probability of leading to such damage or failure increases even more.

Korea Patent Publication No. 10-2018-0125071 (published on: November 22, 2018) Korean Patent Registration No. 10-1923940 (Registration Date: 2018.11.26) Korean Patent No. 10-1895849 (Registration Date: 2018.08.31)

The present invention takes this point into consideration, and two switches connected in series are configured to act ON at different ambient temperatures, and with these switches, an alarm operates at a low set temperature and a resistor is used at a high set temperature. By configuring the circuit to appear as if a short circuit has occurred, an overheat alarm and An object of the present invention is to provide an automatic power-off device.

In particular, the present invention adds at least one auxiliary blocking circuit consisting of two switches operating at the same ambient temperature as these switches, so that each auxiliary blocking circuit is mounted in a place where the space is divided into several so that it can be used safely and conveniently. Another purpose is to provide an over-temperature alarm and automatic power-off.

In addition, the present invention by adding a capacitor to the cut-off circuit, when the neutral (N) phase of the main power is grounded, it is possible to maintain a constant current using the charging current, so that it can be used safely and conveniently. Another object is to provide a power interrupter.

The overheat alarm and automatic power cut-off device according to the present invention for achieving this purpose is installed in the main body (B) constituting the LED display board, the bus information information display board (BIT), the outdoor lighting and signboard, or the outdoor unit of the heating and cooling equipment. In the overheat alarm and automatic power cut-off device installed in the main power breaker (E) that cuts off the power supply; A blocking circuit 10 is installed so as to be connected to the main power circuit breaker (E) to obtain the effect of alarming or blocking the main power, and the blocking circuit 10 is a first switch 11; a second switch 12 connected in series with the first switch 11, which is closed at a second set temperature set higher than the first set temperature, the ambient temperature is higher than the first set temperature; an alarm (13) branched between the first switch (11) and the second switch (12) and installed in parallel with the second switch (12); a resistor (14) installed between the second switch (12) and the output terminal of the alarm (13) to cause a short circuit; and a diode (15) that blocks reverse power from flowing into the resistor (14).

In particular, a capacitor 16 is further added between the resistor 14 and the diode 15 to maintain a constant current.

Finally, at least one auxiliary blocking circuit 10' is further added to each space in at least one other space partitioned from the space in which the blocking circuit 10 is installed, and in the auxiliary blocking circuit 10', the a third switch (17) operating at a first set temperature and connected in parallel with the first switch (11); and the fourth switch (18) operating at the second set temperature, connected in series with the third switch (17) and simultaneously connected with the second switch (12) in parallel. .

The overheat alarm and automatic power-off device according to the present invention has the following effects.

(1) According to the change of ambient temperature, it warns that it is overheating, so that appropriate measures can be taken.

(2) Accordingly, appropriate measures can be taken in the overheated state, which is the state before the fire, so that it does not lead to a fire and damage can be minimized.

(3) In particular, it is possible to use the power supplied to the main power circuit breaker even though it is not an actual leakage current by using a resistor to configure the circuit to look like a short circuit, increasing the warning effect and safe use.

(4) On the other hand, an auxiliary blocking circuit is constituted together with such a blocking circuit, and the auxiliary blocking circuit is separately partitioned, for example, in a boiler room equipped with a boiler, a blocking circuit is installed, and in the master bedroom and living room, respectively, an auxiliary blocking circuit By installing , the overheat alarm and automatic power cutoff device according to the present invention can be easily extended and used.

(5) At this time, by configuring the auxiliary blocking circuit with two switches that respond to the ambient temperature, the structure is simple, but the circuit configuration and the entire circuit can be easily expanded.

[FIG. 1] is a configuration diagram showing an example in which an overheat alarm and automatic power cut-off device according to [Example 1] of the present invention is mounted on the main body.
[Fig. 2] is an enlarged view to show the configuration of an overheat alarm and automatic power cut-off device according to [Embodiment 1] of the present invention.
[Figure 3] is a view showing the operating state of the overheat alarm and automatic power cut-off device according to [Example 1] of the present invention, (a) is a state in which the first switch operates at a low set temperature set temperature to alarm , (b) shows the state in which the first and second switches operate together to look like an alarm and a short circuit when the high set temperature set temperature is reached.
[Fig. 4] is an enlarged view to show the configuration of an overheat alarm and automatic power cut-off device according to [Embodiment 2] of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, the terms or words used in the present specification and claims should not be construed as being limited to their ordinary or dictionary meanings, and the inventor may properly define the concept of the term in order to best describe his invention. According to the principle that can be, it should be interpreted as meaning and concept consistent with the technical idea of the present invention.

Therefore, since the embodiments described in this specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention and do not represent all the technical spirit of the present invention, various equivalents that can be substituted for them at the time of the present application It should be understood that there may be variations and examples.

The overheat alarm and automatic power cut-off device according to [Embodiment 1] of the present invention, as shown in [Figs. It is connected to the power breaker (E) installed in the main body (B) constituting the outdoor unit of the breaker (10) is installed so as to obtain the effect of an alarm or cut off the main power.

In particular, the cut-off circuit 10 includes two first and second switches 11 and 12 that operate at different set temperatures depending on the surrounding temperature, and when the low set temperature is reached, the alarm 13 is activated. When the set temperature higher than the lower set temperature is reached in the absence of action, the alarm 13 is activated and the circuit is configured to appear as if the main power is shorted using a resistor to cut off the alarm and power This was done to prevent fire.

In addition, the blocking circuit 10 is provided with a capacitor 16 to maintain a constant current between the resistor 14 and the diode 15 constituting the blocking circuit 10, so that the neutral (N phase) is grounded. The effect of maintaining a constant current by the charging current and making it look like a short circuit can be made more safely.

Hereinafter, such a configuration will be described in more detail with reference to the accompanying drawings. Here, reference numeral "B" denotes a main body constituting an LED display board, a bus information information display board (BIT), an outdoor lighting lamp and a signboard, or an outdoor unit of a heating/cooling facility, and a main power circuit breaker (E) is installed in the line supplying the main power.

blocking circuit

The cut-off circuit 10, as shown in [Fig. 1] to [Fig. 3], branched from the main power circuit breaker (E) for supplying power to the main body (B) and the circuit is configured in parallel. In particular, the cut-off circuit 10 causes the alarm 13 to operate when the ambient temperature reaches a first set temperature, and when the ambient temperature reaches a second set temperature higher than the first set temperature, the alarm 13 and In addition, it operates as if a short circuit has occurred, so that it can be recognized that the inside of the main body (B) is overheated and a fire may occur.

The blocking circuit 10 includes a first switch 11 , a second switch 12 , an alarm 13 , a resistor 14 , and a diode 15 as shown in FIGS. 2 and 3 . do. In addition, the circuit can be configured to operate stably by adding a capacitor 16 to the blocking circuit 10 .

1. 1st switch and 2nd switch

The first switch 11 and the second switch 12, as shown in [Fig. 2] and [Fig. 3], detect the temperature inside or around the main body (B) and will be described later before reaching a temperature at which a fire can occur. It is a switch for alarming through the alarm 13 or the main power supply through the resistor 14 to obtain an effect such as a short circuit.

In particular, the first switch 11 and the second switch 12 are connected in series to each other, as shown in [Fig. 2], and the first set temperature at which the first switch 11 operates is the first set temperature at which the second switch operates. is set higher than the second set temperature. This is, when the ambient temperature reaches a relatively low first set temperature when the ambient temperature rises, the first switch 11 is first closed so that the alarm 13 to be described later operates, and at this time, no action is taken and the ambient temperature is relatively high When the second set temperature is reached, the second switch 11 is closed while the main power flows through the resistor 14, which will be described later, so that the same effect as the occurrence of a short circuit can be obtained.

2. Alarm

The alarm 13, as shown in [Fig. 2] and [Fig. 3], branched from the above-described first switch 11 and second switch 12 so that the circuit is in parallel with the second switch 12. is composed This is to operate when the ambient temperature reaches the first set temperature and the first switch 11 is turned on to alert a worker or worker so that appropriate measures can be taken against overheating. This alarm 13 is always operated when the first switch 11 is ON.

3. Resistance

The resistor 14 configures a circuit to be located between the output terminal of the above-described alarm 13 and the second switch 12 as shown in FIGS. 2 and 3 . Accordingly, the resistor 14 is in parallel with the alarm 13, and the second switch 12 is in the ON state, that is, the ambient temperature has reached the second set temperature relatively higher than the first set temperature. When the main power is supplied through the first switch 11 and the second switch 12, heat is generated to obtain the same effect as the occurrence of a short circuit.

4. Diode

The diode 15 is to protect the circuit by blocking the reverse power from flowing into the above-described resistor 14 as shown in FIGS. 2 and 3 . The diode 15 is shown in the figure, which is installed between the output terminal of the alarm 13 and the resistor 14 .

5. Condenser

Capacitor 16, as in [Fig. 2] and [Fig. 3], when a leakage effect occurs, a constant current, for example, 40 mA by the charging current is charged by the charging current, so that the earth leakage effect can be made more effectively . The capacitor 16 may not be used depending on the capacitance of the above-described resistor 14, or a capacitor 16 having a larger capacitance may be used.

The present invention made as described above activates an alarm when the ambient temperature reaches the first preset temperature so that an appropriate action can be taken firstly, and if there is no appropriate action, the first set temperature higher than the first set temperature 2When the set temperature is reached, the main power is consumed by the resistor to achieve the same effect as if a short circuit occurred, so that the operator or manager can be notified of the overheat condition in advance before a fire occurs so that appropriate measures can be taken, When it rises to a temperature that can cause a short circuit, it operates as if a short circuit has occurred, so that the operator or manager can directly check it and take necessary measures, so that it can be used safely without causing a fire.

The overheat alarm and automatic power cut-off device according to [Embodiment 2] of the present invention has the same configuration as [Embodiment 1] described above, as shown in [Fig. 4], but by adding an auxiliary shut-off circuit 10'. . Therefore, only the auxiliary blocking circuit 10', which is an additional configuration, will be described in detail here, and the detailed description of the configuration as in [Embodiment 1] will be omitted.

[Embodiment 2], as shown in [Fig. 4], by additionally configuring the auxiliary blocking circuit 10' in a space different from the space where the blocking circuit 10 is installed, it is configured to enable overheat alarm and automatic power supply . Here, the space in which the cut-off circuit 10 is installed refers to a place where, for example, an outdoor unit is installed with an air conditioner, and the other space may be a room, a living room, a kitchen, etc. using air conditioning.

On the other hand, the auxiliary shut-off circuit 10 ′ is installed in a different space as described above to alert and automatically cut off the power when a device such as an air conditioner is overheated according to the surrounding temperature. To this end, the auxiliary blocking circuit 10 ′ is configured to include a third switch 17 and a fourth switch 18 .

At this time, as shown in FIG. 4 , the third switch 17 configures a circuit to be in parallel with the above-described first switch 11 , and the fourth switch 18 includes the above-described second switch 12 . ) and in parallel with the circuit, when there is a risk of overheating or fire due to an increase in ambient temperature in a space other than the space where the main body (B) is installed, the third switch 17 and the fourth switch 18 are connected. Through this, it is possible to selectively control the alarm 13 and the resistor 14 .

In a preferred embodiment of the present invention, it has been described that the third switch 17 operates at the first set temperature and the fourth switch 18 operates at the second set temperature, but the present invention is not limited thereto. That is, since the ambient temperature of the space where the main body B is installed (eg, the outdoor temperature where the outdoor unit is installed) and the internal temperature of the living room are different, the set temperatures of the third switch 17 and the fourth switch 18 are adjusted accordingly. It may be used by setting the temperature different from the set temperature of the first switch 11 and the second switch 12 .

Accordingly, it is possible to further increase the effect of preventing overheating and fire while minimizing the configuration added to each space.

10: blocking circuit
11, 12, 17, 18: 1st, 2nd, 3rd, 4th switch
13: alarm
14: resistance
15: diode
16: condenser
B: body
E: main power breaker

Claims (3)

LED signage, bus information information signboard (BIT), outdoor lighting and signage, or overheat alarm and automatic power off installed on the main power breaker (E) installed on the main body (B) constituting the outdoor unit of heating and cooling equipment to cut off the power supply on the device,
A blocking circuit 10 is installed so as to be connected to the main power circuit breaker (E) to obtain the effect of alarming or blocking the main power, the blocking circuit 10,
The first switch 11 is closed at the first set temperature of the ambient temperature is pre-determined;
a second switch 12 connected in series with the first switch 11, which is closed at a second set temperature set higher than the first set temperature, the ambient temperature is higher than the first set temperature;
an alarm (13) branched between the first switch (11) and the second switch (12) and installed in parallel with the second switch (12);
a resistor (14) installed between the second switch (12) and the output terminal of the alarm (13) to cause a short circuit; and
An overheat alarm and automatic power cut-off device, characterized in that it includes; a diode (15) that blocks the reverse power from flowing into the resistor (14).
In claim 1,
Between the resistor 14 and the diode 15,
An overheat alarm and automatic power cut-off device, characterized in that a capacitor (16) is further added to maintain a constant current.
In claim 1 or 2,
At least one auxiliary blocking circuit 10' is further added to each space in at least one other space partitioned from the space in which the blocking circuit 10 is installed, and the auxiliary blocking circuit 10' includes,
a third switch (17) operating at the first set temperature and connected in parallel with the first switch (11); and
An overheat alarm characterized in that it operates at the second set temperature, and is connected in series with the third switch (17) and at the same time a fourth switch (18) connected in parallel with the second switch (12); and automatic power-off.

Images