JPS63267825A - Safety device for open type burner - Google Patents

Abstract

PURPOSE:To make it possible to actuate an automatic aseismatic fire extinguisher under oxygen deficiency to extinguish fire and to lock the same at the time of normal fire extinguishment by providing a thermal deformation element sensing a temperature fluctuation under oxygen deficiency within the room and changing its position and also providing a normal fire extinguishing lock lever having an operating knob at one end of an operating frame pushing an interlocking member and engaging the same with an engaging part. CONSTITUTION:When indoor air becomes oxygen deficient, the temperature within an atmosphere A of an exhaust gas from a combustion cylinder 6 lowers. This displaces a bimetal 5 provided within the exhaust gas atmosphere A. When an interlocking member 8 having an L-shaped tip end is rotated in the direction indicated by arrow, the interlocking member 8 is disengaged from an engaging part 13 and lowers. As a result, an automatic aseismatic fire extinguisher 7 operates through an operating frame 9 provided at the lower end of the interlocking member 8, and extinguishers fire. At the time of normal fire extinguishment, when an operating knob 17 is pushed up, an interlocking member 8 is pushed up through an operating frame 9 by means of a normal fire-extinguishing lock lever 15. Thus, even when the temperature is lowered, it is possible to lock the automatic aseismatic fire extinguisher 7 under oxygen deficiency so that it cannot operate.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a safety device for an open type combustor that safely extinguishes the fire in the event of abnormal combustion such as an indoor oxygen deficiency.

Conventional technology Conventional 1 For example, since open type combustors such as kerosene heaters are open indoors, the oxygen concentration in the room decreases due to the combustion exhaust gas, which may lead to a dangerous situation of oxygen deficiency. According to Japanese Patent Application Laid-Open No. 58-9, a safety device for abnormal combustion due to lack of oxygen in open type combustors such as kerosene stoves is known.
As in Publication No. 9620, a device detects oxygen deficiency with an oxygen deficiency detection sensor installed on the exterior above the combustion cylinder, and uses the output from the oxygen deficiency detection sensor to make a judgment by a control circuit that operates an alarm means or combustion stop means to issue an alarm or extinguish the fire. is published.

Also, Utility Model Publication No. 50-55239 and Utility Model Publication No. 56-
As stated in Publication No. 20707, in the event of an emergency fire extinguishment or abnormal combustion (abnormal temperature rise), the temperature at the location where the temperature changes compared to the temperature during normal combustion (for example, near the core outer cylinder or inside the fire pan) should be Heat deformable element (e.g. bimetal)
By utilizing the deflection force of the thermal deformation element, the operating frame linked to the automatic seismic fire extinguishing system is moved at the time of abnormal combustion to activate the automatic seismic fire extinguishing system and extinguish the fire.

Problems to be Solved by the Invention The oxygen deficiency detection sensor has a structure installed on the exterior above the combustion cylinder, and the sensor extracts a signal electrically and activates a seismic sensor using a solenoid to electrically extinguish the fire. Detection was not possible when the battery was exhausted.

In addition, with a structure in which the operating frame is placed in contact with the heat deformable element, there are problems such as it is only effective in the case of abnormal combustion (when the flame becomes abnormally large) and is not effective in reducing the temperature in the case of oxygen deficiency. was there.

On the other hand, when a fire is normally extinguished, the temperature of the detection unit equipped with a heat deformable element gradually decreases until the fire is completely extinguished, just as in the case of oxygen deficiency. The problem was that the anti-seismic automatic fire extinguishing system was activated and extinguished the fire more quickly than in normal fire extinguishing conditions, making it unsuitable for use due to the excessive odor it produced during the extinguishing process.

In addition, when dry firing the core, the temperature of the detection part provided with a heat deformable element gradually decreases until the dry baking is completely completed, as in the case of oxygen deficiency, so the oxygen deficiency device works and automatically takes countermeasures. The earthquake automatic fire extinguishing system activates and extinguishes the fire.

Therefore, there was a problem in that the core could not be completely dry-fired.

Means for Solving the Problems The present invention detects temperature changes due to lack of oxygen in the room and displaces heat in the exhaust gas atmosphere generated from the core guide tube that guides the core and the combustion tube placed on the core outer tube. A deformation element is provided, an interlocking body is provided via an operating frame for operating the anti-seismic automatic fire extinguishing device in response to the heat deformation element, and a locking part for locking the interlocking body is provided near the heat deformation element. When the anti-seismic automatic fire extinguishing system is set, an operating frame that pushes the interlocking body to lock it in the locking part is provided so as to be pushed against the interlocking body, and the operating frame is moved so as to move the interlocking body. A normal fire extinguishing lock lever with an operating knob at one end was provided.

By displacing the interlocking body set in the action locking part during abnormal combustion due to lack of oxygen, the thermal deformation element (hereinafter referred to as bimetal)
When the interlocking body is released and suddenly lowered, the anti-earthquake automatic fire extinguishing system is activated properly.

That is, the interlocking body is disengaged from the locking part by the deflection force of the bimetal, and the anti-seismic automatic fire extinguishing device is activated by the spring force to extinguish the fire.

In addition, here, since the structure is such that the interlocking body is moved by the heat deformation element while the temperature is cooling, conversely, even when the temperature is rising, such as during ignition, the heat deformation element ( bimetal) hit, and the tip of the bimetal bent, allowing it to overcome the interlocking body. This may cause the bimetal to deform, so the door opens freely in the direction in which the bimetal shifts due to temperature rise, but does not open in the opposite direction. By providing it at the tip of the door, the one-way door opens even when the bimetal hits the interlocking body during the temperature rise at the initial stage of ignition, allowing the bimetal to smoothly cross over the interlocking body.

Also, when setting the interlocking body to the locking part of the guide plate, a compression spring is used to push up the interlocking body and rotate the interlocking body in the direction of the locking part, and a rotational force in the direction of the locking part is applied to this spring. By providing this additionally, the interlocking body can be rotated toward the locking portion by simply pushing it up, and can be set in the locking portion.

In addition, when normally extinguishing a fire, an operating knob is used to lower the wick, and an oxygen-deficient extinguishing lock lever is linked to this, and by pushing up and fixing the interlocking body through the operating frame, automatic vibration control in the event of an oxygen deficiency is provided. Lock the fire extinguisher. In other words, when normally extinguishing a fire, by moving the operating knob that lowers the wick in the extinguishing direction, the operating frame linked to this operating knob prevents the interlocking body from moving downward, and the anti-seismic automatic fire extinguishing system in the event of oxygen starvation. locked. Also, when the wick is raised using the operating knob for normal combustion, this fire extinguishing lock lever rotates, and the anti-seismic automatic extinguishing system in the event of oxygen deficiency is unlocked, and the interlocking body becomes free, allowing the automatic anti-seismic extinguishing system to function in the event of oxygen deficiency. will be able to operate freely.

Example An embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is a wick that sucks up liquid fuel from a tank and evaporates it. The core 1 is held by a core guide tube 2 on the inside and a core outer tube 3 on the outside. Core guide tube 2 and core outer tube 3
A combustion cylinder 6 is provided at the upper end of the cylinder.

In the exhaust gas atmosphere (A) from the combustion tube 6, there is an interlocking body 8 in which a heat deformable element 5 (here, a bimetal is used for explanation) is interlocked with an anti-seismic automatic fire extinguishing device 7 via an operating frame 9. It is provided so that it is in contact with one end of the. This interlocking body 8 is provided with a spring 10 (the same effect can be obtained with a weight) that biases and compresses the interlocking body 8 in the operating direction, and the force of this spring 10 works to push the interlocking body 8 and operate it. . An operating frame 9 is provided in contact with or as a device at the end of the interlocking body 8, and the other end of this operating frame 9 is provided in contact with the anti-seismic automatic fire extinguishing device 7.

The tip of the interlocking body 8 is L-shaped and is set in the locking part 13 when the anti-seismic automatic fire extinguishing system is set in the event of oxygen deficiency. Compressing spring 1 provided on interlocking body 8
0 is fixed to the guide plate 22, and the other end is fixed to the interlocking body 8.

Note that this compressing spring 10 connects the tip of the interlocking body 8 to the locking part 1.
It is twisted and set so that it can be rotated in three directions.

Furthermore, a door 12 that can be opened one-way is provided at the tip of the bimetal 5 that is in contact with the interlocking body 8 via a shaft 23, and this door 12 can be opened freely in the direction of deviation when the temperature rises with the shaft 23 as a fulcrum. It is designed to open in the direction of temperature drop and close in the direction of temperature drop.

Further, the operating frame 9, which is movably disposed at the end of the interlocking body 8 with a shaft 16 as a fulcrum, has a normal fire extinguishing lock lever 1.
This normal fire extinguishing lock lever 15 is movable up and down via a shaft 16, and an operating knob 17 is provided at the other end thereof. The shaft 16 is also provided with a lever (not shown) for moving the core 1 up and down.

Further, a dry firing lock knob 18 is provided at the other end of the operating frame 9 provided at the end of the interlocking body 8, and this dry firing lock knob 1
8 is provided with a shaft that is guided as a fulcrum 20 so as to be movable along an inclined surface 21 provided on the dry firing lock guide 19.

The operation of the above configuration will be explained next.

During steady combustion, the exhaust gas atmosphere from the combustion tube 6 (
The temperature in A) is maintained at a temperature of <To as shown in Figure 2, but when it enters an oxygen-deficient state, the combustion reaction near the tip of the wick 1 slows down due to the lack of oxygen in the combustion air. As the temperature decreases, the amount of combustion decreases.

Therefore, the temperature in the exhaust gas atmosphere A from the combustion tube 6 is T2
It goes down as shown. Furthermore, looking at the temperature change due to oxygen deficiency in the exhaust gas atmosphere A from the combustion tube 6, as shown in Figure 5, the temperature decreases as the oxygen concentration decreases, and the temperature change up to 18% oxygen concentration is due to TA. It can be seen that the temperature decreases. Here, this temperature change is used to deflect the bimetal 5 provided in the exhaust gas atmosphere A, and the deflection force of the bimetal 5 is used to prevent the third
As shown in the figure, when the interlocking body 8 having an L-shape at the tip is rotated in the direction of the arrow by the biasing force of the bimetal 5, the L-shaped interlocking body 8 is released from the locking part 13 and moves downward by the force of the spring 10 or by its own weight. The anti-seismic automatic fire extinguishing device 7 operates via an operating frame 9 provided at the lower end of the body 8 to extinguish the fire.

Here, when the temperature is rising, even if the one-way opening door 12 provided at the tip of the bimetal 5 hits the interlocking body 8, the door 12
opens and allows the user to easily climb over the interlocking body 8.

Also, next is the anti-seismic automatic fire extinguishing system in case of oxygen deficiency! 7, when the interlocking body 8 is pushed through the operating frame 9, the interlocking body 8
The L-shaped tip automatically rotates toward the locking portion 13 by the rotational force of the compressing spring 10, and can be set in the locking portion 13.

Further, an operating frame 9 is provided at the end of the interlocking body 8,
At the other end of this operating frame 9, a normal fire extinguishing lock lever 15 is attached via a shaft 16 and is movable when the operating knob 17 is raised in the extinguishing direction.During normal extinguishing, when the operating knob 17 is pushed up, the normal fire extinguishing lock lever 15 is activated. Interlocking body 8 via operating frame 9
is pushed up, and the anti-seismic automatic fire extinguishing device 7 can be locked so that it cannot operate in the event of oxygen deficiency during normal fire extinguishing or even if the temperature drops.

Further, a dry firing lock knob 18 is provided at the end of the interlocking body 8, and when the dry firing lock knob 18 is set along the inclined surface 21 of the dry firing lock guide 19 in the direction of the arrow, the operating frame 9 can be moved. The interlocking body 8 is pushed through the interlocking body 8 during dry firing, so that even if the temperature drops, the anti-seismic automatic fire extinguishing device 7 cannot be activated, and complete dry firing can be performed.

Effects of the Invention As described above, according to the present invention, when an open-type combustor such as a kerosene heater is used, the interlocking body can be disengaged from the locking part by the biasing force of the bimetal in an indoor oxygen-deficient condition that is considered to be dangerous. The anti-earthquake automatic fire extinguishing system can be operated properly with good responsiveness by the force of the spring installed in the body.

Furthermore, even during ignition, the bimetal is not stopped by the interlocking body and can smoothly pass over the interlocking body through the one-way opening door.

In addition, to set the fire extinguishing system in the event of oxygen deficiency, simply push up the interlocking body with the operating frame, and the reverse-shaped tip of the interlocking body will automatically rotate toward the locking part due to the rotational force of the spring, and will attach to the locking part. Can be set.

In addition, when normally extinguishing a fire, simply by raising the operating knob in the extinguishing direction, one operating frame pushes up the interlocking body and automatically locks the fire extinguishing device in the event of oxygen deficiency, and the fire extinguishing device in the event of oxygen deficiency does not operate during normal fire extinguishing.

In addition, when the wick is dry-fired, by setting the dry-fire lock knob, the operating frame pushes up the interlocking body and fixes the fire extinguishing device in the event of oxygen deficiency, making it impossible to operate, making it possible to completely dry-fire. It is a useful thing that can be done.

[Brief explanation of drawings]

FIG. 1 is a side cross-sectional view of essential parts of a safety device for an open type combustor according to an embodiment of the present invention, and FIGS. 2 and 5 show a combustion tube in the case of oxygen deficiency in the safety device for an open type combustor according to the present invention. Figures 3 and 4 are perspective views of essential parts of a safety device for an open type combustor according to an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Core, 2... Core guide tube, 3... Core outer tube, 5... Heat deformation element, 6... Combustion tube, 7
...Anti-earthquake automatic fire extinguishing system, A...Exhaust gas atmosphere, 8...Interlocking body, 9...Operation frame. 13...Locking part, 15...Normal fire extinguishing lock lever 117...Operation knob.

Claims (1)

[Claims] The core guide tube (2) that guides the core (1) and the combustion tube (6) placed on the core outer tube (3) detect the temperature change in the exhaust gas atmosphere generated from the core outer tube (3) and are displaced in the exhaust gas atmosphere. Heat deformable element (
5), and an interlocking body (8) having an L-shaped end is provided via an operating frame (9) that operates the anti-seismic automatic fire extinguishing device (7) in response to the heat deformation element (5), The interlocking body (8)
In the safety device for an open type combustor, which has a locking part (13) for locking the heat deformable element (5), when the anti-seismic automatic fire extinguishing device (7) is set, the interlocking body ( 8) to lock the operating frame (9) in the locking part (13) with the interlocking body (8).
An open type combustion system characterized by a normal fire extinguishing lock lever (15) having an operating knob (17) at one end of the operating frame (9) so as to move the operating frame (9). Equipment safety device.