JPS63217132A - Safety device of open type burner - Google Patents

Abstract

PURPOSE:To actuate a fire-extinguishing device at the time of oxygen deficiency and stop the operation thereof at the time of no-fuel burning of a wick by providing a thermal deformation element in the vicinity of a top plate at the upper part of a combustion cylinder, providing an interlocking member through an operating frame actuating an automatic aseismatic fire- extinguishing device so as to respond the thermal deformation element, and also providing an engaging part for engaging the interlocking member. CONSTITUTION:When the burner is put into an oxygen deficient state, a combustion reaction in the vicinity of the tip end of a wick 1 is delayed and the reaction temperature is lowered. Therefore, the temperature in the vicinity of a top plate 25 is also lowered. Thereby a bimetal 5 deflects. By this deflecting force an interlocking member 8 is rotated and disconnected from an engaging part 13. An automatic aseismatic fire-extinguishing device operates and extinguishes fire by the force exerted by a spring 10 through an operating frame 9. Further, a no-fuel burning locking knob 18 is provided at the end of the interlocking member 18. If the knob 18 is set in the direction indicated by the arrow along an inclined surface 21 of a no-fuel burning locking guide 19, the interlocking member 8 is pushed through the operating frame 9. Hence, even when the temperature is lowered at the time of no-fuel burning, the automatic aseismatic fire-extinguishing device 7 cannot operate so that a complete no-fuel burning can be performed.

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 may reduce the oxygen concentration in the room, creating a risk of oxygen deficiency1. 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, it is detected by an oxygen deficiency detection sensor installed on the exterior above the combustion cylinder, and a control circuit that operates an alarm means or combustion stop means makes a judgment based on the output from the oxygen deficiency detection sensor to issue an alarm or extinguish the combustion. The outfit has been made public.

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, an operating frame linked to an anti-seismic automatic fire extinguishing system is moved at the time of abnormal combustion, thereby activating the anti-seismic automatic extinguishing system to 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 it detects and extracts an electrical signal and activates a seismic sensor using a solenoid to electrically extinguish the fire. When I tried to turn it off, it was not detected. In addition, in the case of a structure in which the operating frame is placed in contact with the heat deformable element, in the event of abnormal combustion (
There were problems such as it was not effective in reducing the temperature when oxygen was deficient (only when the flame became abnormally large).

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 oxygen depletion device in the fire was activated and the anti-seismic automatic fire extinguishing system was activated to extinguish the fire faster than normal fire extinguishing, making the fire extremely unpleasant and unsuitable for use.

In addition, when the core is empty, the temperature of the detection part, which is a heat deformable element, gradually decreases until the dry baking is completed, as in the case of oxygen deficiency, so the oxygen deficiency device works automatically. Activate the anti-seismic automatic fire extinguishing system to extinguish the fire. As a result, there were problems such as dry burning of the core or not being able to burn it completely.

Means to Solve the Problems The present invention provides a heat deformation element that is in contact with or in the vicinity of the top plate at the top of the combustion cylinder, which senses temperature changes during indoor oxygen depletion and is displaced, and responds to the heat deformation element. An interlocking body is provided through an operating frame for operating the anti-seismic automatic fire extinguishing device, and a locking portion for locking the interlocking body is provided near the thermal deformation element.

By displacing the interlocking body set in the action locking part with a heat deformable element (hereinafter referred to as bimetal) during abnormal combustion due to lack of oxygen,
The anti-seismic automatic fire extinguishing system will be properly activated when the interlocking body is released and suddenly lowered.

That is, the interlocking body is removed from the blocking 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, since this is a structure in which the interlocking body is moved by the 8 deformation elements while the temperature is cooling, conversely, even when the temperature is rising, such as during ignition, the interlocking body has a heat deformation element. (bimetal), the tip of the bimetal bent and climbed over the interlocking body. Because of this, the bimetal may deform, so the door opens freely in the direction in which the bimetal deviates when the temperature rises, but the door does not open in the opposite direction.A one-way door. By providing at the tip of the bimetal, the temperature at the initial stage of ignition -h! ? Even when a bimetal or interlocking object hits inside, the one-way door opens and the bimetal can smoothly overcome the interlocking object.

Also, when inserting the interlocking body into the stopper part of the guide plate, at the same time as pressing the interlocking member, a compression spring is used to rotate the interlocking member in the direction of the stopper part, and the spring is attached to the stopper part. By applying a rotational force in this direction, the interlocking body can be pushed up and rotated toward the stop, allowing it to be set in the stop.

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

In the figure, 1 is a wick that sucks 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. A combustion tube 6 is provided at the upper end of the core guide tube 2 and the core outer tube 3.

In contact with or in the vicinity of the top plate 25 at the top of the combustion tube 6, there is an interlocking device that is interlocked with the anti-seismic automatic fire extinguishing device 7 via a thermal deformation element 5 (here, explained using a bimetal) or an operating frame 9. It is provided so as to be in contact with one end of the body 8. This interlocking body 8 has a spring I that biases and compresses in the operating direction.
Q (a turning effect can be obtained even by turning) is provided, and the force of this spring 1o works to push the interlocking body 8 and operate it. An operating frame 9 is provided in contact with or passed through the end of the rhythm body 8, and the other end of the operating frame 9 is provided in contact with the anti-seismic movement fire extinguishing device 7.

The tip of the interlocking body 8 is L-shaped and is set in the stop portion 13 when the anti-seismic movement fire extinguishing device is set in the event of oxygen deficiency. One end of a compressible spring 10 provided on the interlocking body 8 is fixed to the guide plate 22, and the other end is fixed to the interlocking body 8.

The compressing spring 10 is twisted and set so as to rotate the tip of the interlocking body 8 in the direction of the stopper 13.

Further, at the tip of the bimetal 5 in contact with the interlocking body 8, a door 12 that can be opened one-way is provided via a shaft 23, and with the shaft 23 as a fulcrum, this door 12 can be opened freely in the direction of deviation when the temperature rises. 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 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 l up and down.

Further, an empty position lock knob 18 is provided at the other end of the operating frame 9 provided at the end of the interlocking body 8.
8 is a heavy-fired lock guide. ] 9 is a sloped surface 21.
A shaft is provided which is guided as a fulcrum 20 so as to be movable along the axis.

The operation of the above configuration will be explained next.

During steady combustion, the temperature on or near the top plate 25 at the top of the combustion tube 6 is < TL as shown in Figure 2.
If the temperature is maintained or an oxygen-deficient state occurs, the combustion reaction near the tip of the wick 1 will slow down due to the lack of oxygen in the combustion air, and the temperature at which the reaction occurs will drop, resulting in a decrease in the amount of combustion.

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 L-shaped tip is rotated in the direction of the arrow by the deflection force of the bimetal 5, the L-shaped interlocking body 8 is disengaged from the locking portion 13.

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

Here, when the temperature is rising, even if the door 12 that can be opened 10,000 times provided at the tip of the bimetal 5 or the interlocking body 8 is hit, the door 12 will not open.
It is possible to easily overcome the opening interlocking body 8.

Next, when setting the anti-seismic automatic fire extinguishing device 7 in case of oxygen deficiency, 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 in the direction of the stop portion 13 and set in the stop portion 13.

Further, an operating frame 9 is provided at the end of the interlocking body 8,
The other end of the operating frame 9 is normally movable when an operating knob 17 is raised in the extinguishing direction via a fire extinguishing outlet lever 15 or a shaft 16. When the fire is normally extinguished, push up the control knob 17.
The interlocking body 8 is pushed up by the normal fire extinguishing lock lever 15 via the operating frame 9, and can be locked so that the anti-seismic movement fire extinguishing device 7 cannot be operated during oxygen deficiency even if the temperature drops during normal fire extinguishing.

Further, a vacant position locking knob 18 is provided at the end of the interlocking body 8, and when this vacant position locking knob 18 is set along the inclined surface 21 of the vacant position rotor guide 19 in the direction of the arrow, the interlocking body is closed via the operating frame 9. When 8 is pressed and the position is empty, the anti-seismic automatic fire extinguishing device 7 cannot be activated even if the temperature drops, and the position can be completely empty.

Effects of the Invention As described above, according to the present invention, the interlocking body can be removed from the blocking part by the deflection force of the bimetal in the case of indoor oxygen deficiency IE, which is considered to be dangerous while using an open type combustor such as an kerosene heater. The force of the spring provided in the interlocking body allows the anti-seismic automatic fire extinguishing system to operate in a responsive and appropriate manner.

Also, even when igniting, the interlocking body can be smoothly passed through the one-way door without being stopped by the bimetal or the interlocking body.

In addition, to set up a fire extinguishing system in the event of an oxygen deficiency, simply push up the interlocking body with the operating frame, and the reversely shaped tip of the interlocking body will automatically rotate toward the stopper due to the rotational force of the spring, and will be attached to the stopper. You can set it.

In addition, when normally extinguishing a fire, just by raising the operating knob in the direction of extinguishing, the operating frame 9 pushes the interlocking body and automatically locks the fire extinguishing system in the event of oxygen deficiency. It doesn't work.

In addition, when the wick is empty, by setting the empty lock knob, the operating frame or interlocking body is pushed up, and the fire extinguishing device is fixed in the event of oxygen deficiency, making it inoperable, which is beneficial, as it is possible to completely empty the wick. It is something.

[Brief explanation of the drawing]

11'3 is a side cross-sectional view of a main part of a safety device for an open type combustor according to an embodiment of the present invention, and FIG. The uninterrupted temperature characteristic diagram, 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 cylinder, 3...
- Core outer cylinder, 5... Heat deformation element, 6... Combustion tube, 7... Anti-seismic automatic fire extinguishing device, 8...
Interlocking body, 9... Operating frame, IO... Spring,
13...Locking portion, 25...Top plate.

Claims (1)

[Claims] 1) A core guide tube (2) and a core outer tube (3) that guide the core (1).
) is placed on the top plate (25) located above the combustion tube (6).
) is provided with a heat deformable element (5) that senses a temperature change during indoor oxygen depletion and is displaced in contact with or near the heat deformable element (5).
), an interlocking body (8) is provided via an operating frame (9) that operates the anti-seismic automatic fire extinguishing system (7) in response to
8) A safety device for an open type combustor, characterized in that a locking portion (13) for locking the heat deformable element (5) is provided in the vicinity of the heat deformable element (5). 2) The safety device for an open type combustor according to claim 1, wherein the interlocking body (8) is provided with a spring (10) or a weight for biasing the interlocking body (8) in the operating direction. 3) The end of the interlocking body (8) is L-shaped, and a spring (
10) is provided on the interlocking body (8). The safety device for an open type combustor according to claim 1.