JPS63267818A - Safety device for open type burner - Google Patents

Abstract

PURPOSE:To make it possible to actuate an automatic aseismatic fire extinguisher under an extraordinary combustion such as an oxygen deficiency within the room, or the like by providing an operating frame pushing an interlocking member to engage the same with an engaging part, and also providing an air combustion locking knob pushing to fix the operating frame to the interlocking member side so that the knob engages with the operating frame. CONSTITUTION:When indoor air becomes oxygen deficient the temperature on the surface or in the vicinity of a top plate 25 positioned above a combustion cylinder 6 lowers. This displaces a bimetal 5 provide in contact with or in close vicinity of the surface of the top plate 25. When an interlocking member 8 having an inverted L-shaped tip end is rotated in the direction indicated by arrow, an 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 extinguishes fire. Further, when an air combustion locking knob 18 provided at the end of the interlocking member 8 is set in the direction of arrow along an inclined surface of an air combustion lock guide 19, the interlocking member 8 is pushed, and even when the temperature lowers at the idling burning time, an automatic aseismatic fire extinguisher 7 cannot operate and a complete no-fuel burning can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a safety device for an open type combustor that uses an alarm to issue a warning in the event of abnormal combustion such as when there is a lack of oxygen in the room.

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. 1 As a safety device for abnormal combustion due to lack of oxygen in open type combustors such as kerosene stoves, Japanese Patent Application Laid-Open No. 58-9
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 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 Since the oxygen deficiency detection sensor is installed on the exterior above the combustion cylinder, it cannot properly detect the temperature of the flame during oxygen deficiency abnormal combustion. Additionally, due to the structure in which the operating frame is placed in contact with the thermal deformation element, there are problems such as poor responsiveness of the operating frame due to thermal displacement, which may make it impossible to properly operate the automatic seismic fire extinguishing system or alarm means. there were.

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-firing is completely completed, as in the case of oxygen deficiency, so the oxygen deficiency device works and the temperature decreases dynamically. The anti-earthquake automatic fire extinguishing system operates to extinguish 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 during indoor oxygen deficiency in contact with or near the top plate located at the top of the wick guide tube that guides the wick and the combustion tube placed on the core outer tube. A heat deformable element is provided that is displaced by
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 portion for locking the interlocking body is provided near the heat deformation element. , an operating frame for pushing the interlocking body and locking it in the locking portion is provided so as to respond to the interlocking body, and furthermore, a dry firing lock knob for pushing and fixing the operating frame toward the interlocking body during dry firing is engaged with the operating frame. It was set up as follows.

When the interlocking body set in the action locking part is abnormally burned due to lack of oxygen,
By displacing the heat deformable element (hereinafter referred to as bimetal), it is released and its interlocking body is suddenly lowered, thereby properly operating the anti-seismic automatic fire extinguishing system.

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.

By using a compression spring that simultaneously pushes up the interlocking body and rotates the interlocking body in the direction of the locking part, and by applying rotational force in the direction of the locking part to this spring, it is possible to move the interlocking body in the direction of the locking part by simply pushing up the interlocking body. It rotates and can be set in the locking part.

In addition, when normally extinguishing a fire, an operating knob is used to lower the wick, and an oxygen-deficient extinguishing lock lever is provided in conjunction with this, which pushes up and fixes the interlocking body through the operating frame, automatically preventing vibrations in the event of an oxygen deficiency. 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 that is linked to this operating knob prevents the interlocking body from moving downward, and the automatic fire extinguishing system in case of oxygen deficiency. is 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.

Also, by setting the dry firing lock knob when dry firing the core,
The interlocking frame is used to push the interlocking body so that it cannot be moved, thereby locking the anti-seismic automatic fire extinguishing system in the event of oxygen deficiency.

In other words, when dry-firing the core, if the dry-firing lock knob is set along the slope of the dry-firing lock guide, the interlocking body cannot move downward via the operating frame, and the anti-seismic automatic fire extinguishing system is locked in the event of oxygen deficiency. Ru. Moreover, when the dry firing is completed, by removing the set of the dry firing lock knob, the interlocking body becomes free, and the anti-seismic automatic fire extinguishing system in the case of oxygen deficiency becomes operable.

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 has a core guide tube 2 on the inside. The outer side is held by an outer core cylinder 3. Core guide tube 2 and core outer tube 3
A combustion cylinder 6 is provided at the upper end of the cylinder.

In contact with or near the top plate 25 located at the top of the combustion tube 6, a thermal deformation element 5 (here, explained using a bimetal) is linked with an anti-seismic automatic fire extinguishing device 7 via an operating frame 9. It is provided so as to be in contact with one end of the interlocking body 8. This interlocking body 8 has a spring i that urges and compresses the actuating direction.
o (the same effect can be obtained with a weight), and the force of this spring 10 works to push the interlocking body 8. 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 the operating frame 9 is provided in contact with the earthquake-resistant automatic fire extinguishing system W17.

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 one-way opening door 12 is provided at the tip of the bimetal 5 in contact with the interlocking body 8 via a shaft 23, and the 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 in which the temperature decreases, and close in the direction in which the temperature decreases.

Further, the operating frame 9, which is disposed at the end of the interlocking body 8 so as to be movable about the shaft 16, usually has a 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, another 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.

This dry firing lock knob 18 is provided with a shaft that is guided as a fulcrum 20 so as to be movable along an inclined surface 21 provided on a dry firing lock guide 19.

The operation of the above configuration will be explained next.

During steady combustion, the top plate 2 located at the top of the combustion tube 6
As shown in Figure 2, the temperature at or near the surface of wick 1 is maintained at the temperature of the T-piece, but when it enters an oxygen-deficient state, the combustion reaction near the tip of wick 1 slows down due to the lack of oxygen in the combustion air. The temperature at which the reaction occurs decreases, and the amount of combustion decreases.

Therefore, the temperature at or near the surface of the top plate 25 decreases as shown at T2. Here, by utilizing this temperature change, the bimetal 5 provided in contact with or near the surface of the top plate 25 is deflected, and the deflection force of the bimetal 5 is utilized to generate oxygen deficiency as shown in FIG. When the interlocking body 8 having an inverted shape at its tip is rotated in the direction of the arrow by the deflection force of the bimetal 5, the interlocking body 8 having an inverted shape is disengaged from the locking portion 13.

The anti-seismic automatic fire extinguishing device 7 is activated to extinguish the fire through an operating frame 9 provided at the lower end of the interlocking body 8 which is lowered by the force of the spring 10 or by its own weight.

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 L-shaped tip of the interlocking body 8 is compressed by the rotational force of the spring 10.
It can be automatically rotated toward the locking portion 13 and 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 the operating frame 9, a fire extinguishing lock lever 15 is normally movable via a shaft 16 when an operating knob 17 is raised in the extinguishing direction. During normal fire extinguishing, when the operating knob 17 is pushed up, the normal fire extinguishing lock lever 15 allows the interlocking body 8 to
is pushed up and the anti-seismic automatic fire extinguishing device 7 can be locked so that it cannot operate even if the temperature drops during normal fire extinguishing.

Further, a dry firing lock knob 18 is provided at the end of the interlocking body 8, and by setting the dry firing lock knob 18 in the direction of the arrow along the inclined surface 21 of the dry firing lock guide 19, 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 when one ignition occurs, 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 direction of extinguishing, the operating frame pushes up the interlocking body and automatically locks the fire extinguishing system in the event of oxygen deficiency.

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 the drawing]

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 FIG. 2 is a sectional side view of a main part of a safety device for an open type combustor according to an embodiment of the present invention. FIGS. 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, 8...Interlocking body, 9...
- Operating frame, 13...Locking part, 18...Dry firing lock knob.

Claims (1)

[Claims] Temperature during indoor oxygen deficiency when in contact with or near the top plate (25) located at the top of the combustion tube (6) placed on the core guide tube (2) that guides the core (1) and the core outer tube (3). A heat deformation element (5) that senses a change and displaces is provided, and the end portion is connected to the L through an operating frame (9) that operates an anti-seismic automatic fire extinguishing system (7) in response to the heat deformation element (5). In a safety device for an open type combustor, an interlocking body (8) having a shape is provided, and a locking part (13) for locking the interlocking body (8) is provided near the heat deformation element (5). , an operating frame (9) is provided so as to respond to the interlocking body (8) by pushing the interlocking body (8) and locking it to the locking part (13), and furthermore, the operating frame (9) is moved to the interlocking body during dry firing. (8) side to lock the dry firing lock knob (18) on the operating frame (9).
A safety device for an open type combustor, characterized in that it is provided so as to engage with the combustor.