JP3775748B2 - Fire detector - Google Patents

Description

  The present invention relates to a fire detector.

  As described in Japanese Patent Application Laid-Open No. 2003-36488, fire detectors are generally used and attached and installed on a ceiling surface, but the operation is not easy. Man-hours are required and cost is high.

  For this reason, it is normal for fire detectors to be installed in a building after construction, but they are not installed in a building or work place under construction. Therefore, when a fire occurs in a building or work place under construction, it is not possible to deal with it accurately, and there is a strong demand for countermeasures.

  For the same reason, fire detectors are not installed in exhibition halls, event halls, performance halls, temporary houses, temporary lodgings, temporary factories and temporary offices. Therefore, when a fire breaks out, it cannot be dealt with accurately.

  Further, as described above, the fire detector of the same publication is of a type that detects smoke or heat, and is attached to the ceiling surface. Therefore, when a fire occurs, if smoke or heat reaches the ceiling surface, the fire detector detects the fire, but until the smoke or heat reaches the ceiling surface, the fire detector detects the fire until the smoke or heat reaches the ceiling surface. It is not possible. Therefore, there is a strong demand for early fire detection even if smoke or heat does not reach the ceiling.

  In addition, there are several causes of fires and the places where they occur. For example, in the case of arson, fires often occur outdoors, and fires often occur in fences, fences, parking lots, storerooms, warehouses, and waste storage areas. Therefore, it is also important to ensure that fires are detected from time to time regardless of where they occur.

  In addition, fires may occur in ships, aircraft, vehicles and workplaces under construction.

  Accordingly, an object of the present invention is to provide a fire detector that can be easily installed, does not require man-hours, and is low in cost.

  Another object is to provide a fire detector suitable for installation in a building or work place under construction.

  Another object is to provide a fire detector suitable for installation in a temporary building such as an exhibition hall.

  Another object is to make fires sensed early, even if smoke or heat does not reach the ceiling.

  Another object is to ensure that fires are detected from time to time regardless of the location of the fire.

Another object is to provide a fire detector suitable for installation on ships, aircraft, vehicles and workplaces under construction.
JP 2003-36488 A

  According to this invention, a pair of electric wires having conductors are wound on a reel, and a shape memory alloy body is attached around the pair of electric wires. Then, when the electric wire is pulled out from the reel, laid, and a fire breaks out, the shape memory alloy body is reconstructed by the heat of the fire, each electric wire is tightened by the shape memory alloy body, the conductor contacts, and the fire Perceived.

  The shape memory alloy body is preferably coiled and wound around a pair of wires.

  The shape memory alloy body may be in the form of a sleeve network composed of double coils facing in opposite directions.

  The shape memory alloy body may be clip-shaped.

  In a preferred embodiment, a plurality of shape memory alloy bodies are spaced along the wires and attached around a pair of wires.

  The electric wire is made of a soluble insulated wire having a soluble insulator. And when a conductor is accommodated in a soluble insulator and a fire breaks out, an insulator fuses with the heat.

  The reel has a power supply device and an alarm device. Furthermore, each electric wire is connected to a power supply device and an alarm device. Therefore, when the conductor comes into contact, current is supplied from the power supply device, flows to the alarm device, and an alarm is issued by the alarm device.

  The heat response means may be incorporated between the electric wires, and when a fire occurs, the heat response means responds to the heat of the fire, and the electric wires are connected by the heat response means so that the fire is sensed.

  The thermal response means is made of a sensing wire, a bimetal, a semiconductor or a shape memory alloy body.

  It is preferable to arrange a plurality of thermal response means at intervals along the electric wires and to incorporate them between the electric wires.

  Winding the closed loop wire around the reel and incorporating the thermal response means into the closed loop wire so that when a fire occurs, the thermal response means responds to the heat of the fire and an electromotive force is generated by the thermal response means so that the fire is sensed It may be.

  The thermal response means is made of a thermocouple or a thermal semiconductor.

  A plurality of thermal response means are preferably spaced along the wire and incorporated into the closed loop wire.

  The reel preferably has a power supply device, an alarm device, and an electromotive force detection device. Further, the detection device is connected to the power supply device and the alarm device, and the closed loop electric wire is connected to the detection device. Therefore, when an electromotive force is generated, the electromotive force is detected by the detection device, current is supplied from the power supply device, flows to the alarm device, and an alarm is issued by the alarm device.

  A pair of electric wires may be wound on a reel, and smoke detection means may be incorporated between the electric wires. .

FIG. 1 is a perspective view showing an embodiment of the present invention.
FIG. 2 is a perspective view showing the opposite side of the fire detector of FIG.
FIG. 3 is an electric circuit diagram of the fire detector of FIG.
FIG. 4 is a perspective view of another reel used in the fire detector of FIG.
FIG. 5 is an explanatory view showing another embodiment.
FIG. 6 is an explanatory view showing another embodiment.
FIG. 7 is a perspective view showing another embodiment.
FIG. 8 is a perspective view showing another embodiment.
FIG. 9 is an explanatory view showing another embodiment.

Explanation of symbols

1, 30, 41, 44 Electric wire 2, 31 Reel 8 Shape memory alloy body 9 Jack 15, 39 Fire lamp 16, 40 Bell or buzzer 37 Sensing wire 38 Battery 42 Thermocouple or thermal semiconductor 43 Electromotive force detection device 45 Smoke detection means

  Examples of the present invention will be described below.

  FIG. 1 shows a fire detector according to the present invention. This fire detector includes a pair of electric wires 1, which have a conductor and are wound around a reel 2. In this embodiment, the reel 2 has a pair of flanges 3 and 4, and the drum is disposed between the flanges 3 and 4. The flanges 3 and 4 are concentric with the drum and integrated with the drum. . Further, a stand 5 is formed by a metal rod, and the metal rod bends upward and extends along one flange 3. Further, one end of the metal rod is bent horizontally, and a support shaft is formed by the bent end. The support shaft extends in the axial direction of the flanges 3 and 4 and the drum, and is inserted into the center hole thereof. The drum is supported by a spindle and is rotatable. Further, the other end of the metal rod is bent horizontally, and a handle 6 is formed by the bent end. The handle 6 extends in the axial direction of the flanges 3 and 4 and the drum, and is disposed above the handle 6. Further, as shown in FIG. 2, the handle 7 is provided on the other flange 4, and the flanges 3, 4 and the drum are rotated by the handle 7, and the electric wire 1 is wound around the drum between the flanges 3, 4. be able to. Thereafter, the handle 6 can be held with one hand and the reel 2 and the electric wire 1 can be transported.

  Further, a shape memory alloy body 8 is attached around the pair of electric wires 1. The shape memory alloy body 8 has a coil shape and is wound around the pair of electric wires 1. Further, in this embodiment, a plurality of shape memory alloy bodies 8 are arranged at intervals along the electric wire 1, wound around and attached to the pair of electric wires 1. As will be described later, when a fire occurs, the temperature rises due to the heat of the fire, but when the temperature reaches the set temperature, the shape memory alloy body 8 is reconstructed by the heat of the fire and the radius decreases. To do. On the other hand, the electric wire 1 is composed of a soluble insulated wire having a soluble insulator. The conductor is accommodated in the fusible insulator, and the temperature rises due to the heat of the fire. When the temperature reaches a predetermined temperature, the insulator melts due to the heat of the fire.

  Furthermore, the reel 2 has a power supply device and an alarm device. In this embodiment, a jack 9 is used as a power supply device, and the jack 9 is provided on one flange 3. Further, the plug 10 is provided at one end of the electric wire 11, and the AC adapter 12 is provided at the other end of the electric wire 11, so that the plug 10 can be inserted into the jack 9 and the AC adapter 12 can be inserted into the outlet. It can be supplied from the adapter 12, passed through the electric wire 11, and led to the plug 10 and the jack 9. In addition, a switch 13 and a power lamp 14 are provided on one flange 3. Further, a fire lamp 15 and a bell or buzzer 16 are used as an alarm device, the fire lamp 15 is provided on one flange 3, and the bell or buzzer 16 is provided on the other flange 4.

  Furthermore, each electric wire 1 is connected to a power supply device and an alarm device. In this embodiment, as shown in FIG. 3, each electric wire 1 is connected to a relay 17, a switch 13 and a jack 9, and is connected to a relay contact 18, a fire lamp 15 and a bell or buzzer 16. Further, a power lamp 14 is connected to the switch 13 and the jack 9.

  The action of this fire detector is as follows.

  For example, in a building or work place under construction, the plug 10 is inserted into the jack 9 and the AC adapter 12 is inserted into an outlet. Further, the switch 13 is switched to the ON state. Therefore, a current is supplied from the AC adapter 12 and is guided to the plug 10 and the jack 9 through the electric wire 11. Further, current is supplied from the jack 9, flows through the switch 13, flows into the power lamp 14, and the power lamp 14 is turned on by the current. Then, the electric wire 1 is pulled out from the reel 2 and laid on the floor surface, ceiling surface, or wall surface. The electric wire 1 may be pulled out from the reel 2 and installed in the air and laid.

  Therefore, after that, when a fire occurs, the temperature rises due to the heat of the fire, and when the temperature reaches the set temperature, the shape memory alloy body 8 is restored in shape by the heat of the fire, and its radius decreases. Therefore, each electric wire 1 is clamped by the shape memory alloy body 8, and the conductor contacts. A fire is detected by this.

  In this embodiment, the electric wire 1 is a fusible insulated wire, and the conductor is accommodated in the fusible insulator as described above. Therefore, when a fire occurs, the temperature rises due to the heat of the fire, and when the temperature reaches a predetermined temperature, the insulator melts due to the heat of the fire. At the same time, the shape memory alloy body 8 is restored in shape by the heat of the fire, the radius thereof is reduced, and each electric wire 1 is tightened by the shape memory alloy body 8. Therefore, a conductor contacts reliably.

  Moreover, as described above, the plurality of shape memory alloy bodies 8 are arranged at intervals along the electric wire 1 and are wound around and attached to the pair of electric wires 1. Therefore, there is no problem even if a fire occurs in any part of the entire length of the electric wire 1. At that portion, the shape memory alloy body 8 is restored in shape by the heat of the fire, the electric wires 1 are tightened, and the conductors are brought into contact. Therefore, a fire is reliably detected.

  Further, when the conductors of the electric wires 1 come into contact, first, current is supplied from the jack 9 and flows through the electric wire 1 to the relay 17. The relay 17 is excited by the electric current, and the relay contact 18 is switched to the ON state. Therefore, current flows through the relay contact 18 and flows to the fire lamp 15 and the bell or buzzer 16, and the current causes the fire lamp 15 to light and the bell or buzzer 16 to sound. Accordingly, an alarm is given by the fire lamp 15 and the bell or buzzer 16, and the fire can be dealt with accurately.

  This fire detector has a pair of jacks 19. The jack 19 is used for testing the fire lamp 15 and the bell or buzzer 16, and is combined with each electric wire 1 and provided at the tip thereof. Further, a pair of plugs 20 are combined therewith, and each plug 20 is connected by an electric wire 21. Thus, each plug 20 can be plugged into each jack 19 and current can flow through the fire lamp 15 and bell or buzzer 16 so that the fire lamp 15 and bell or buzzer 16 can be tested.

  Further, in this embodiment, the jack 22 is provided on one flange 3, and when the fire breaks out, the conductor of the electric wire 1 contacts and the relay 17 is excited, the relay contact 23 is switched to the ON state. The current passes through the relay contact 23 and is supplied to the jack 22. Further, as shown in FIG. 4, in another reel 24, a plug 25 is provided at the tip of the electric wire 26, the electric wire 26 is wound around the reel 24, and the electric wire 26 can be pulled out from the reel 24. 25 can be plugged into the jack 22. The reel 24 has the same structure as the reel 2 and has a handle 27 and a bell or buzzer 28. Accordingly, current flows through the electric wire 26 to the bell or buzzer 28, and the current causes the bell or buzzer 28 to ring. Therefore, even at a position away from the reel 2, an alarm is given by the bell or buzzer 28, and the fire can be dealt with accurately.

  Further, a radio signal transmitter 29 is provided on one flange 3, and a radio signal is transmitted from the transmitter 29 when a fire occurs and the conductor of the electric wire 1 comes into contact. Therefore, at a position away from the reel 2, a radio signal can be received by the receiver and an alarm can be issued by the alarm device.

  This fire detector is portable and can be easily transported. After that, it is only necessary to pull out the electric wire 1 from the reel 2 and lay it at the installation position. This can be easily installed, no man-hour is required, and the cost is low. When the installation is no longer necessary, the electric wire 1 can be wound around the reel 2 and can be easily transported and stored. After storage, this fire detector can be transported to other installation locations and used repeatedly, which is economical and practical.

  As a result, this fire detector can be installed in a building or work place under construction. Therefore, when a fire occurs in a building or work place under construction, it is possible to cope with it appropriately.

  This fire detector can be installed not only in a building under construction but also in a temporary building such as an exhibition hall. Therefore, when a fire occurs in the temporary building, it can be dealt with accurately.

  In a building after construction, when a normal fire detector is attached to the ceiling surface, use this fire detector for the building, pull out the electric wire 1 from the reel 2, and lay it on the floor or wall surface. Also good. The electric wire 1 may be pulled out from the reel 2 and installed in the air and laid. In this case, even if smoke or heat does not reach the ceiling surface, a fire is detected at an early stage and can be dealt with appropriately.

  In addition, a fire can be detected at any time regardless of the location of the fire. For example, in the case of arson, a fire often occurs outdoors, but this fire detector can be installed outdoors, and when a fire occurs outdoors, it can be dealt with appropriately.

  This fire detector can also be installed in ships, aircraft, vehicles and workplaces under construction. Therefore, when a fire breaks out, it can be dealt with accurately.

  In this embodiment, the jack 9 is used as the power supply device, and the AC adapter 12 and the plug 10 are combined with the jack 9. However, a battery such as a dry battery or a storage battery is used as the power supply device, which is a reel. 2 may be provided.

  As shown in FIG. 5, the shape memory alloy body 8 may be in the form of a sleeve network composed of double coils in opposite directions. In this case, when the electric wire 1 is inserted into the sleeve mesh-shaped shape memory alloy body 8, the shape memory alloy body 8 is attached around the pair of electric wires 1. When a fire occurs, the shape memory alloy body 8 is reconstructed by the heat of the fire, and its radius decreases. Therefore, each electric wire 1 is clamped by the shape memory alloy body 8, the conductors come into contact with each other, and a fire is detected.

As shown in FIG. 6, the shape memory alloy body 8 may have a clip shape. Even if it is a clip shape, if it is attached around the pair of electric wires 1, when a fire occurs, the shape memory alloy body 8 is restored in shape by the heat of the fire, and its radius decreases. Therefore, each electric wire 1 is clamped by the shape memory alloy body 8, the conductors come into contact with each other, and a fire is detected.
When a pair of electric wires 1 are twisted together and wound on a reel 2, it is easy to use.

  FIG. 7 shows another embodiment. Also in this embodiment, the pair of electric wires 30 are wound around the reel 31. The reel 31 has flanges 32 and 33, a drum, a stand 34, a handle 35, and a handle 36. Accordingly, as with the reel 2 in FIG. 1, the flanges 32 and 33 and the drum can be rotated by the handle 36, and the electric wire 30 can be wound around the drum between the flanges 32 and 33. Thereafter, the handle 35 can be held with one hand and the reel 31 and the electric wire 30 can be conveyed.

  Furthermore, in the embodiment of FIG. 7, a thermal response means is incorporated between the electric wires 30. The thermal response means comprises a sensing line 37. In this embodiment, a plurality of sensing wires 37 are arranged along the electric wires 30 at intervals, and are incorporated between the electric wires 30. The sensing wire 37 is a twisted insulated wire that is a twisted pair of insulated wires.

  Furthermore, the reel 31 has a power supply device and an alarm device. In this embodiment, a battery 38 such as a dry battery or a storage battery is used as a power supply device, and this is provided on one flange 32. Further, a fire lamp 39 and a bell or buzzer 40 are used as an alarm device, which is provided on one flange 32. Furthermore, each electric wire 30 is connected to a battery 38, a fire lamp 39 and a bell or buzzer 40.

  Then, the electric wire 30 is pulled out from the reel 31 and laid. Therefore, when a fire subsequently occurs, the sensing wire 37 responds to the heat of the fire, the insulation of the sensing wire 37 is broken by the heat of the fire, and each electric wire 30 is connected by the sensing wire 37, and the fire is sensed. . Furthermore, current is supplied from the battery 38 and flows to the fire lamp 39 and the bell or buzzer 40. The fire lamp 39 is turned on by the current, and the bell or buzzer 40 sounds. Therefore, an alarm is given by the fire lamp 39 and the bell or buzzer 40, and the fire can be dealt with accurately.

  When a bimetal, a semiconductor, or a shape memory alloy body is used as the thermal response means and a fire occurs, the bimetal, the semiconductor, or the shape memory alloy body responds to the heat of the fire, and each electric wire 30 is responded by the bimetal, the semiconductor, or the shape memory alloy body. May be connected.

  In the embodiment of FIG. 8, the closed loop electric wire 41 is wound around the reel 31, and the thermal response means is incorporated in the closed loop electric wire 41. The thermal response means comprises a thermocouple or a thermal semiconductor 42. Further, in this embodiment, a plurality of thermocouples or thermal semiconductors 42 are arranged along the electric wire 41 at intervals, and are incorporated in the closed loop electric wire 41.

  Further, in addition to the battery 38 such as a dry battery or a storage battery, the fire lamp 39 and the bell or buzzer 40, the reel 31 has an electromotive force detection device 43. An electromotive force detection device 43 is also provided on one flange 32. The detection device 43 is connected to the battery 38, the fire lamp 39 and the bell or buzzer 40, and the closed loop electric wire 41 is connected to the detection device 43.

  Therefore, when a fire occurs, the thermocouple or thermal semiconductor 42 responds to the heat of the fire, an electromotive force is generated by the thermocouple or thermal semiconductor 42, and the fire is sensed. Further, when an electromotive force is generated, the detection device 43 detects the electromotive force, current is supplied from the battery 38, flows to the fire lamp 39 and the bell or buzzer 40, and an alarm is given by the fire lamp 39 and the bell or buzzer 40. The

  In the embodiment of FIGS. 7 and 8, a jack may be used for the power supply device, and an AC adapter and a plug may be combined with the jack, similar to the reel 2 of FIG.

  In the embodiment of FIG. 9, a pair of electric wires 44 are wound around a reel, and smoke detecting means 45 is incorporated between the electric wires 44. The reel has a power supply device and an alarm device, and each electric wire 44 is connected to the power supply device and the alarm device as in the other embodiments.

  Then, the electric wire 44 is pulled out from the reel and laid. Therefore, after that, when a fire occurs, the smoke is detected by the smoke detecting means 45, the electric wires 44 are connected, and the fire is sensed. Further, current is supplied from the power supply device, flows to the alarm device, and an alarm is issued by the alarm device.

Claims (9)

With reel,
A pair of electric wires having a conductor and wound on the reel;
It consists of a shape memory alloy body attached around the pair of wires,
When the electric wire is pulled out from the reel, laid, and a fire occurs, the shape memory alloy body is restored in shape by the heat of the fire, the electric wires are tightened by the shape memory alloy body, and the conductors are in contact with each other, A fire detector characterized by detecting fire.   The fire sensor according to claim 1, wherein the shape memory alloy body is coiled and is wound around the pair of electric wires.   The fire detector according to claim 1, wherein the shape memory alloy body has a sleeve mesh shape composed of double coils facing in opposite directions.   The fire detector according to claim 1, wherein the shape memory alloy body is in a clip shape.   The fire detector according to any one of claims 2 to 4, wherein a plurality of the shape memory alloy bodies are arranged at intervals along the electric wires and are attached around a pair of electric wires.   The electric wire comprises a fusible insulated wire having a fusible insulator, the conductor is accommodated in the fusible insulator, and when the fire occurs, the insulator is melted by the heat. The fire detector according to claim 5, wherein   The reel has a power supply device and an alarm device, and the electric wires are connected to the power supply device and the alarm device, and when the conductor contacts, current is supplied from the power supply device and flows to the alarm device, The fire detector according to claim 1, wherein an alarm is given by the alarm device. With reel,
A pair of wires wound on the reel;
Comprising thermal response means built in between the wires,
When the electric wire is pulled out from the reel, laid, and a fire occurs, the thermal response means responds to the heat of the fire, and the electric wires are connected by the thermal response means so that a fire is sensed , further
The reel includes a power supply device and an alarm device, and the electric wires are connected to the power supply device and the alarm device. When the electric wires are connected, current is supplied from the power supply device and flows to the alarm device. The fire detector is characterized in that an alarm is given by the alarm device. With reel,
A closed loop wire wound around the reel;
Comprising thermal response means incorporated into the closed loop wire,
When the electric wire is pulled out from the reel, laid and fire occurs, the thermal response means responds to the heat of the fire, an electromotive force is generated by the thermal response means, and the fire is sensed , and
The reel has a power supply device, an alarm device, and an electromotive force detection device, the detection device is connected to the power supply device and the alarm device, the closed loop electric wire is connected to the detection device, and the electromotive force is generated. The fire detector is characterized in that the electromotive force is detected by the detection device, a current is supplied from the power supply device, flows to the alarm device, and an alarm is issued by the alarm device.

Images