JPS63267819A - Safety device for open type burner - Google Patents

Abstract

PURPOSE:To make it possible to safely extinguish fire under oxygen deficiency within the room and to open a door even when a bimetal comes into contact with an interlocking member during the temperature rise by providing the thermal deformation element (bimetal) sensing a temperature fluctuation under an oxygen deficiency and changing its position, and providing a one-way opening door riding over the interlocking member at the time of a temperature rise and pressing the interlocking member at the time of a temperature fall, at the tip end of the thermal deformation element. CONSTITUTION:When indoor air becomes oxygen deficient, the temperature on the inner surface or in the vicinity of a combustion cylinder 6 is lowered, and a bimetal 5 provided between an outer flame cylinder 26 and an outer cylinder 27 is displaced. When an interlocking member 8 having an inverted L-shaped tip end is rotated in the direction indicated by arrow by utilizing this displacement force, the interlocking member 8 is disengaged from an engaging part 13 and is lowered, and 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. In this case, while the temperature is rising even when a one-way opening door 12 provided at the tip end of the bimetal 5 comes into contact with the interlocking member 8, the door 12 can be opened and easily clear the interlocking member.

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 Conventionally, open combustors such as kerosene stoves are open indoors, so the combustion exhaust gas can reduce the oxygen concentration in the room, creating a risk of oxygen deficiency. As you can see, Japanese Patent Application Laid-Open No. 58-9 is a safety device for abnormal combustion due to lack of oxygen in open type combustors such as kerosene stoves.
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 Application r@56
- As stated in Publication No. 20707, in the event of an emergency fire extinguishment or abnormal combustion (abnormal temperature rise), the location where the temperature changes compared to the temperature during normal combustion (e.g. near the core outer cylinder or inside the fire pan). The temperature is determined using a heat deformation element (for example, bimetal, etc.), and the deflection force of the heat deformation element moves an operating frame linked to the anti-seismic automatic fire extinguishing system in the event of abnormal combustion, thereby activating the automatic anti-seismic extinguishing system. It was intended to extinguish the fire.

Problems to be Solved by the Invention The oxygen deficiency detection sensor has a structure that is installed on the exterior above the combustion cylinder, and the sensor extracts an electrical signal and activates the seismic sensor using a solenoid to electrically extinguish the fire. It could not be detected when it 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 provides a heat deformable element that senses temperature changes during indoor oxygen depletion and displaces in the core guide tube that guides the core and the combustion tube that is placed on the core outer tube. In a structure in which an interlocking body is provided via an operating frame that operates an anti-seismic automatic fire extinguishing device in response to a heat deformable element, and a locking portion for locking the interlocking body is provided near the heat deformable element, A one-way opening door is provided at the tip of the heat deformable element, which crosses over the interlocking body when the temperature rises and pushes the interlocking body when the temperature falls.

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 down, the heat deformation element ( Bimetal) is a hit.

By bending the tip of the bimetal, it was able 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 in the direction of the locking portion by simply pushing it up, and can be set in the locking/locking portion.

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.

A heat deformable element 5 (here, a bimetal is used for explanation) is installed in the inner flame tube 25 of the combustion tube 6 or between the outer flame tube 26 and the outer tube 27 via an operating frame 9 to provide an anti-seismic automatic fire extinguishing system. 7
It is provided so as to be in contact with one end of the interlocking body 8 which is interlocked with the interlocking body 8. 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 downward, and the force of this spring 10 acts to push down the interlocking body 8. An operating frame 9 is provided in contact with or as a device at the lower 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 has an inverted shape.

When the anti-seismic automatic fire extinguishing device is set in the event of oxygen deficiency, it is set in the locking portion 13. The upper end of the compressible spring 10 provided on the interlocking body 8 is fixed to the guide plate 22, and the lower end thereof is fixed to the interlocking body 8. Furthermore, this compressing spring 10 is twisted and set so as to rotate the tip of the interlocking body 8 toward the locking portion 13.

Furthermore, a one-way opening J5i12 is provided at the tip of the bimetal 5 in contact with the interlocking body 8 via a shaft 23.
3 as a fulcrum, the door 12 is freely opened in the direction of deviation when the temperature rises, and conversely closed in the direction of the temperature drop.

Further, a lock lever is attached to the lower end of the interlocking body 8 via an operating frame 9.
14 is movably provided, and a normal fire extinguishing lock lever 15 is provided so as to be in contact with the other end of this lock lever 14, and this normal fire extinguishing lock lever 15 is rotatably mounted via a shaft 16. An operating knob 17 is provided at the other end. 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 lock lever 14 provided at the lower end of the interlocking body 8, and this dry firing lock knob 18 has a slit 21 formed in the dry firing lock guide 19. A shaft is provided as a fulcrum 20 to be guided.

In addition, the dry firing lock knob 18 is operated by the operation knob 17.
The structure is such that the dry firing lock knob 18 is released from the set by being pushed back by the normal fire extinguishing lock lever 15 which is interlocked with the fire extinguishing lock lever 15.

The operation of the above configuration will be explained next.

During steady combustion, the temperature at or near the surface of the combustion tube 6 maintains a temperature of <T, as shown in Figure 2, but when it enters an oxygen-deficient state, the wick dies due to the lack of oxygen in the combustion air. The combustion reaction near the first tip is slowed down, the temperature at which the reaction occurs is lowered, and the amount of combustion is reduced.

Therefore, the temperature at or near the surface inside the combustion tube 6 decreases as shown at T2. Here, by utilizing this temperature change, the bimetal 5 provided inside the inner flame tube 25 of the combustion tube 6 (between the outer flame tube 26 and the outer tube 27) is deflected.
When an oxygen shortage occurs using the deflection force of the bimetal 5, as shown in FIG. is released from the locking part 13 and lowered by the force of the spring 10 or its own weight, and the anti-seismic automatic fire extinguishing device 7 is activated via the operating frame 9 provided at the lower end of the interlocking 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.

Next, when setting up the anti-seismic automatic fire extinguishing system in case of oxygen deficiency, when the interlocking body 8 is pushed up by the lock lever 14, the reversely shaped tip of the interlocking body 8 will automatically close due to the rotational force of the compressing spring 10. It can be rotated in the direction of the locking part 13 and set in the locking part 13.

Further, a lock lever 14 is provided at the lower part of the interlocking body 8, and a fire extinguishing lock lever 15 is normally attached to the other end of the lock lever 14 and rotates when the operating knob 17 is raised in the extinguishing direction via a shaft 16. During normal fire extinguishing, when the operation knob 17 is pushed up, the interlocking body 8 is pushed up by the normal fire extinguishing lock lever 15 via the lock lever 14. Can be locked to prevent operation.

Further, a lock lever 14 is provided at the lower part of the interlocking body 8, and a dry firing lock knob 18 provided at the other end of the lock lever 14 is used to move the lock lever 14 in the direction of the arrow through the slit 21 of the dry firing lock guide 19. If it is set along the lock lever 14, the interlocking body 8 will be pushed up and the anti-seismic automatic fire extinguishing system will not be able to operate even if the temperature drops during dry firing.
Complete dry firing is possible.

In addition, even if you forget to release the dry firing lock knob 18 after dry firing is completed, when you lower the wick 1 with the operation knob 17, the normal fire extinguishing lock lever 15 that is interlocked with this will move in the direction of the arrow with the shaft 16 as a fulcrum. It rotates, and the set dry firing lock knob 18 can be pushed and turned to automatically release it.

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, when setting the fire extinguishing system in case of oxygen deficiency, the interlocking body should be set with a lock lever.
By simply pushing it up, the reverse-shaped tip of the interlocking body will automatically rotate toward the locking part due to the rotational force of the spring, and can be set in the locking part.

In addition, when normally extinguishing a fire, simply raising the operating knob in the extinguishing direction causes the lock lever to push up the interlocking body and automatically lock 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 dry burning the wick, by setting the dry burning rotary knob, the lock lever pushes up the interlocking body and fixes the fire extinguishing device in the event of oxygen deficiency, making it impossible to operate and completely dry burning. can.

In addition, even if you forget to release the dry firing lock knob, by lowering the wick using the operating knob, the dry firing lock knob can be automatically released using the normal fire extinguishing lock lever, which is beneficial.

[Brief explanation of drawings]

FIG. 1 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, and FIG. 2 is a side sectional 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. 1... Core, 2... Core guide tube. 3... Core outer cylinder, 5... Heat deformable element, 6... Combustion tube, 7... Anti-seismic automatic fire extinguishing device, 8... Interlocking body, 9... Operating frame, 11...・Tip of heat deformable element, 12... Door, 13... Locking part.

Claims (1)

[Claims] A heat deformable element (5) that senses temperature changes during indoor oxygen depletion and displaces inside the core guide tube (2) that guides the core (1) and the combustion tube (6) placed on the core outer tube (3). is provided, and the heat deformable element (
An interlocking body (having an inverted L shape at the upper end) via an operating frame (9) that operates the anti-seismic automatic fire extinguishing system (7) in response to
8), and a locking portion (13) that locks the interlocking body (8).
In the safety device of the open type combustor, which is provided near the heat deformation element (5), the distal end (11) of the heat deformation element (5) is provided with a structure that allows the distal end (11) of the heat deformation element (5) to climb over the interlocking body (8) when the temperature rises; A safety device for an open type combustor, characterized by having a one-way opening door (12) that pushes the interlocking body (8) when the temperature drops.