KR200352663Y1 - Preventing dew condensation in Smoke detector - Google Patents

Abstract

The present invention relates to an anti-condensation smoke detector with a sensor and a heater to prevent condensation in the outer case and the outer case using a heat-resistant resin. The condensation prevention smoke detector according to the present invention includes an outer case 400 in which a signal terminal 440 and a power terminal 420 are formed, a sensor 300 for sensing a temperature inside the outer case 400, It is configured to include a heater 200 is controlled by the sensor 300, the outer case 400 is characterized in that composed of a heat-resistant resin that is not deformed by temperature changes of the outside, the sensor 300 ) Is characterized by consisting of bimetal (ON) that is turned on (ON) / off (OFF) according to the temperature change. According to the present invention, there is an advantage that can prevent the malfunction of the smoke detector by preventing the condensation phenomenon.

Description

Preserving dew condensation in Smoke detector

The present invention relates to a smoke detector, and more particularly, to a condensation prevention smoke detector with a sensor and a heater to prevent condensation in the outer case and the outer case using a heat-resistant resin.

In general, a fire detector can be largely represented by a smoke detection type and a heat detection type. Among them, the thermal fire detector has a constant temperature method in which the internal bimetal operates to connect the contacts when a certain temperature is exceeded when the ambient temperature rises, and when the temperature rises sharply, the air in the thermal chamber expands to increase the temperature. There is a differential equation to detect by bonding the contacts inside the contacts by pushing up the diaphragm.

Such heat-sensitive fire detectors have a disadvantage of being detected only when high heat is generated due to flames due to their low detection range and slow detection time, while having little effect on the installation environment. Therefore, it is difficult to meet the fire purpose of early detection and early evolution. There are disadvantages. In other words, it takes a long time for a fire alarm to risk early failure to extinguish the fire.

The smoke detection type fire detector includes photoelectric type for detecting fire using light and ionization type for detecting smoke using radioactive material. That is, the photoelectric sensor is configured to detect that light is blocked or reflected by the smoke, and the ionizing sensor is operated to be similar to the photoelectric sensor by the smoke generated in a fire by using a radioactive material. It is composed.

Therefore, it is widely used in general ground buildings due to its wide detection range and fast detection time. Furthermore, the installation of smoke detectors is inevitable in places where the monitoring range is wide and early detection is premised, such as telecommunication or power equipment.

1 is a perspective view of a conventional smoke detector, and FIG. 2 is a schematic block diagram of a conventional smoke detector. As shown in these drawings, the smoke detector 10 is configured in such a way that the receiving panel 30 detects the diffuse reflection in the dark room when the smoke is introduced.

The smoke detector 10 is operated by the power supplied from the receiving panel 30, and when the smoke is introduced, the smoke is displayed by lighting of the light emitting diode (LED) attached to the smoke detector 10, and the smoke detector 10 is activated. The resistance loop of the internal circuit operates a relay (not shown) of the receiver to generate a fire alarm.

On the other hand, the smoke detector 10 is installed inside the substantially cylindrical outer case 20, one side of the non-polar connection line between the smoke detector 10 and the receiving panel on the outer side of the outer case 20. An open current detecting terminal 22 is provided.

The lower part of the smoke detector 10 detects an operating current of the smoke detector 10 flowing between the current detection terminals 22 by the detector 23, amplifies the detected signal by the transistor TR, When the status display light emitting diode 26 to be described is turned on, the current consumption of the infrared light emitting diode (not shown) driving circuit inside the smoke detector 10 is changed according to the resonator time constant, whereby the status display light emitting diode 26 Is blinking at regular intervals, and the monitoring circuit C is configured and installed to effectively determine whether there is an abnormality in the internal circuit (not shown) of the smoke detector 10, the receiving panel 30, and the line.

One end of the monitoring circuit C is connected to a power supply terminal 24 and a power display light emitting diode 28 formed on one side of the constant voltage power supply unit 25 and the current detection terminal 22, thereby providing the power display light emitting diode 28. The display unit 27 is configured to confirm whether the power connection introduced into the monitoring circuit C is normal by the lighting of. That is, when the power display LED 28 is not turned on, it can be seen that the power connection introduced into the monitoring circuit C is shorted in an abnormal state.

On one side of the power display light emitting diode 28, a status display light emitting diode 26 is formed to determine whether the smoke detector 10 is normally operated according to whether it is turned on, and on one side of the smoke detector 10, a fire is generated. A fire alarm display light emitting diode 12 which is generated and lit when smoke is introduced is further formed.

However, the above conventional technologies have the following problems.

The smoke detector 10 is inserted into and fixed inside the outer case 20 and installed in an underground passage where a communication device or a power outlet is located. Such an underground passage is humid and has a severe temperature difference. Moisture is generated.

Therefore, such moisture affects the monitoring circuit C inside the outer case 20, causing the smoke detector 10 to malfunction.

An object of the present invention for solving the problems as described above, to provide a condensation prevention smoke detector with a sensor and a heater to prevent the occurrence of condensation inside the outer case and the outer case using a heat-resistant resin.

1 is a perspective view of a conventional smoke detector.

2 is a schematic block diagram of a conventional smoke detector.

Figure 3 is an exploded perspective view of a condensation prevention smoke detector which is a preferred embodiment of the present invention.

Figure 4 is a schematic block diagram for implementing a condensation prevention method of a smoke detector that is a preferred embodiment of the present invention.

Figure 5 is a block diagram showing the configuration for implementing a condensation prevention method of the smoke detector is adopted a preferred embodiment of the present invention.

6 is a schematic flowchart for carrying out a condensation prevention method of a smoke detector employing a preferred embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100. ..... Smoke Detector 120. ..... Smoke Detector Support Plate

200. ..... Heater 220. ..... Heater support plate

240. ..... Heater terminal 300. ..... Sensor 320. ..... Sensor terminal 400. ..... Outer case

420. ..... Power Terminal 440. ..... Signal Terminal

460. ..... Mounting bracket 500. ..... Power input

520. ..... Power Supply 540. ..... Fuse

600. ..... Voltage adjuster 620. ..... First Zener diode

640. ..... Variable resistance 642. ..... First resistor

644. ..... the second resistor 660. ..... capacitor

680. ..... 2nd Zener Diode 700. ..... Heater Control Part

C. ..... Circuit Board

Smoke sensor for preventing condensation according to the present invention for achieving the above object, the outer case is formed with the signal terminal and the power terminal, a sensor for sensing the temperature inside the outer case, the operation is controlled by the sensor Characterized in that configured to include a heater.

The outer case is characterized in that it is composed of a heat-resistant resin that is not deformed by changes in temperature outside.

In addition, the sensor is characterized in that the bimetal (Bimetal) that is turned on (ON) / off (OFF) according to the temperature change.

According to the smoke detector for condensation prevention according to the present invention having such a configuration, there is an advantage that can prevent the malfunction of the smoke detector by preventing the condensation phenomenon.

Preferred embodiments of the present invention as described above will be described in detail with reference to the accompanying drawings.

3 is an exploded perspective view of a condensation prevention smoke detector employing a preferred embodiment of the present invention, Figure 4 is a schematic block diagram for implementing a condensation prevention method of a smoke detector employing a preferred embodiment of the present invention It is.

And, Figure 5 is a block diagram showing a configuration for implementing a condensation prevention method of the smoke detector is a preferred embodiment of the present invention, Figure 6 is shown a condensation prevention method of the smoke detector is adopted a preferred embodiment of the present invention A schematic flow diagram for carrying out is shown.

As shown in these drawings, the condensation prevention smoke detector according to the present invention has a smoke detector 100 installed inside the substantially cylindrical outer case 400. The outer case 400 is preferably made of a heat-resistant resin that is not affected by external temperature changes in order to prevent dew.

On one side of the exterior of the outer case 400, a signal line terminal 440 to which a signal line is connected and a power line terminal 420 to which a power line is connected are formed, and the exterior end is mounted to be fixed to a wall such as a communication device or a power outlet. The bracket 460 is formed.

The smoke detector 100 installed inside the outer case 400 includes a photoelectric type for detecting a fire using light and an ionization type for detecting a smoke using a radioactive material. It is configured to detect the blocking or reflection of light, and the ionization detector is configured to operate in a manner similar to that of the photoelectric sensor by the smoke generated in the fire using radioactive material. Since the configuration and operation principle of the smoke detector 100 is the same as that of the conventional smoke detector, a detailed description thereof will be omitted.

A smoke detector support plate 120 is installed below the smoke detector 100 to support the smoke detector 100 and to be connected to the signal terminal 440. The smoke detector support plate 120 is the outer case 400. It is preferably formed in a circular shape to fit the shape of the.

In addition, the lower part of the smoke detector support plate 120, the power terminal 420 is connected to one side, the lower surface of the heater to dissipate heat so that dew does not form due to the temperature difference with the outside inside the outer case 400 A circular heater support plate 220 provided with 200 is installed.

The lower surface of the heater support plate 220 is provided with a sensor 300 made of a bimetal (Bimetal) for sensing the temperature inside the outer case 400 to turn on / off the heater 200.

In addition, a circuit board C including a plurality of electronic components is installed under the heater support plate 220. The circuit board C detects the operation of the smoke detector 100 and is responsible for preventing condensation and preventing fire by transmitting and receiving signals to the heater 200 and an external device (not shown). Done.

On the other hand, Figure 4 and 5 is a schematic block diagram and configuration diagram for implementing a condensation prevention method of the smoke detector. As shown in the figure, the condensation prevention method of the smoke detector includes a power input unit 500 for supplying power to the heater 200 that generates heat and the power input through the power input unit 500 to receive the sensor. It is composed of a voltage adjusting unit 600 for varying the voltage supplied to (300).

And, according to the sensor 300 consisting of a bimetal (Bimetal) to be turned on / off (ON / OFF) according to the temperature inside the outer case 400 and the on / off (ON / OFF) of the sensor 300 The heater controller 700 is configured to transfer a signal voltage to the heater 200.

The power input unit 500 includes a power supply unit 520 that receives a commercial voltage and a fuse 540 that cuts off power supply when an overcurrent occurs in the power supplied through the power supply unit 520.

The voltage adjusting unit 600 receives a power input through the power input unit 500 and receives a first zener diode 620 for controlling a surge voltage, and receives power input through the power input unit 500. The voltage level adjusted through the variable resistor 640 and the capacitor 660 and the variable resistor 640 and the capacitor 660 that adjusts the voltage supplied to the sensor 300 to an appropriate voltage is preset. The second zener diode 680 is connected to the sensor 300 according to whether the voltage is greater than or equal to the voltage.

The variable resistor 640 has a first resistor 642 having one end connected to the power input unit 500, one end of which is connected to the first resistor 642, and one end of which is connected to the second zener diode 680. The second resistor 644 is connected, and the capacitor 660 is configured such that one end is connected to the second resistor 644 and the other end is connected to the power input unit 500.

In addition, the heater 200 is provided with a heater terminal 240 connected by the power input unit 500 and the heater control unit 700, the sensor 300 is the voltage adjusting unit 600 and the heater driving unit 700. The sensor terminal 320 is provided to be connected to.

6 is a schematic flowchart for implementing a condensation prevention method of a smoke detector. As shown, when the power is supplied by the application of the power (S11), when the overcurrent flows to the power passing through the power supply unit 520 of the power input unit 500, the circuit breaks and does not cause a secondary problem in the circuit. The power input step (S12) consisting of a fuse (Fuse, 540) to protect to pass through.

The power inputted through the power input unit 500 includes a first zener diode 620 whose resistance values at both ends control the surge voltage when an abnormal surge voltage is transferred from the input side. After that, the voltage supplied to the sensor 300 is subjected to the voltage adjusting step S13 of adding / decreasing the voltage from the variable resistor 640 and the capacitor 660.

In the voltage adjusting step (S13), the voltage supplied to the sensor 300 is adjusted to the set voltage by the variable resistor 640 and the capacitor 660, which are arbitrarily adjusted by the user and input as the set voltage. The feature is that it can be done.

In the voltage adjusting step S13, power is supplied from both sides of the power input unit 500 to upper and lower sides (in FIG. 4), one side of which is connected to a variable resistor 640 and the other of which is connected to a capacitor 660. The voltage adjusting unit 600 includes a second zener connected to the sensor 300 when the voltage level adjusted by the variable resistor 640 and the capacitor 660 becomes equal to or greater than a preset voltage (for example, 40V). Includes a diode 680.

When the voltage is supplied to the sensor 300 after the voltage adjusting step S13, the sensor 300 detects whether the temperature inside the outer case 400 is 47 ° C. or less (S14). ).

In the temperature sensing step S14, when the sensor 300 senses a temperature inside the outer case 400 and exceeds 47 ° C., the heater 200 is switched to an OFF mode, and the outer case When the internal temperature of 400 falls below 47 ° C., the heater 200 may be repeatedly turned on.

At this time, when the temperature inside the outer case 400 falls below 47 ° C., the heater control unit 700 undergoes a heater control step (S15) for operating the heater 200. The heater control step (S15) is characterized in that the process of turning on (ON) / off (OFF) the heater 200 according to the temperature measured in the temperature sensing step (S14).

In the heater control step (S15), the connection to the heater 200 includes a heater terminal 240 to which a voltage is supplied from the power input unit 500 to the heater 200, and a signal voltage through the heater control unit 700. The sensor terminal 320 is connected to be supplied to supply a voltage to the heater 200.

That is, when the voltage supplied from the heater control unit 700 and the power input unit 500 is equal to or higher than a voltage (for example, 220V) at which the heater 200 generates heat, the heater 200 is operated. 400 leads to a heating step (S16) to remove the moisture inside.

Therefore, the heat of the heater 200 in the heating step (S16) is to remove the moisture generated on the inner wall of the outer case 400 (S17).

In addition, since the temperature inside the outer case 400 is always maintained at a constant temperature (that is, 47 ° C.), condensation due to moisture is prevented in the outer case 400 in which the smoke detector is built.

The scope of the present invention is not limited to the above-exemplified embodiments, and many other modifications based on the present invention may be made by those skilled in the art within the above technical scope.

Smoke sensor for preventing condensation according to the present invention as described in detail above, the sensor and the heater is built so as to prevent the occurrence of condensation on the wall inside the outer case and the outer case using a heat-resistant resin.

That is, by using the outer case made of heat-resistant resin, the sensor built in the outer case, and the heater controlled by the sensor, the internal temperature of the outer case is kept constant at all times, so that the underground passage where the smoke detector is installed, etc. It is designed so that dew does not occur even in a humid and severe temperature difference.

Therefore, since the dew does not affect the circuit for controlling the smoke detector inside the outer case, the effect that can prevent the malfunction of the smoke detector is expected.

In addition, since the smoke detector can be used semi-permanently by preventing the malfunction of the smoke detector, it is expected that the smoke detector is not frequently replaced, thereby minimizing economic losses.

As a result, malfunction prevention and economic loss are minimized, thereby increasing the reliability of the user, leading to an effect of improving product purchase desire.

Claims (3)

An outer case in which a signal terminal and a power terminal are formed; A sensor for sensing a temperature inside the outer case; Condensation prevention smoke detector, characterized in that it comprises a heater that is controlled by the sensor operation. The method of claim 1, wherein the outer case, Smoke detector for preventing dew condensation, characterized by being made of a heat-resistant resin that is not deformed by changes in temperature outside. The condensation prevention smoke detector according to claim 1, wherein the sensor is made of bimetal that is turned on / off according to a temperature change.