JPS63217134A - Safety device of open type burner - Google Patents

Abstract

PURPOSE:To emit an alarm or extinguish fire at the time of oxygen deficiency by providing a thermal deformation element in contact with or in the vicinity of a combustion cylinder, providing an interlocking member actuating a switch being in contact with a solenoid or an alarm device so as to respond to the thermal deformation element, and also providing an engaging part engaging the interlocking member. CONSTITUTION:In the case of oxygen deficiency, the temperature at a position (in the vicinity of the outside of a combustion cylinder 4) where the temperature fluctuation appears more remarkably than the temperature at the time of normal combustion, displaces a thermal deformation element (such as a bimetal 5). By this displacement force, an interlocking member 8 is rotated. Then, the interlocking member 8 is disconnected from an engaging part. A switch 6 provided at the lower end of the interlocking member 8 operates by the force exerted by a spring 10. An alarm device 25 is lit or rings, or firs is extinguished by a solenoid 30. In this case, during the rise of the temperature, even when a one-way opened door 12 provided at the tip end of the bimetal 5 hits against the interlocking member 8, the door 12 is opened, and hence the door 4 can cross over the interlocking member without any difficulty.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application Kibatsu 1 relates to a safety device for an open type combustor which uses an alarm to issue an alarm in the event of abnormal combustion in an indoor combustor.

Conventional technology Conventionally, open type combustors such as petroleum stones are open indoors, so the combustion exhaust gas may reduce the oxygen concentration in the room, creating a danger of oxygen deficiency1. As a safety device for abnormal combustion due to lack of oxygen in an open type combustor such as a kerosene stove, for example, an oxygen deficiency detection sensor installed on the exterior above the combustion cylinder is disclosed in Japanese Patent Application Laid-Open No. 58-99620. A device has been disclosed that detects the oxygen deficiency and uses a control circuit to actuate an alarm means or combustion stop means based on the output from the oxygen deficiency detection sensor to issue an alarm or 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, there is a problem in that it cannot properly detect the temperature of the flame during oxygen deficiency abnormal combustion.

On the other hand, when a fire is normally extinguished, the temperature of the detection part equipped with a heat deformable element gradually decreases during the complete extinguishment, as in the case of oxygen deficiency, the oxygen deficiency detection device is activated, and the switch is activated. Even when the fire was extinguished, there were problems such as the oxygen deficiency alarm turning on or sounding or the solenoid being used to extinguish the fire.

In addition, when the wick is empty, the temperature of the detection part equipped with a heat deformable element gradually decreases until the dry firing is completely completed, as in the case of oxygen deficiency, and the oxygen deficiency alarm lights or sounds or a solenoid is activated. There was a problem with extinguishing the fire.

Means for Solving the Problems The present invention provides a core guide tube for guiding the core, and a heat deformable element disposed in contact with or near the outside of the combustion tube placed on the core outer tube, which is displaced by sensing a temperature change during indoor oxygen deficiency. and an interlocking body that operates a switch connected to a solenoid or an alarm in response to the heat deformation element, and a locking part for locking the interlocking body is provided near the heat deformation element. And so.

Action When oxygen deficiency occurs, use a deformable element (for example, a bimetal shade) to reduce the temperature at a place where the temperature changes significantly (for example, near the outside of the combustion cylinder) compared to the temperature during normal combustion. The deflection force of the heat deformation element moves the interlocking body that is linked to the switch, activating the switch, and the alarm turns on or does not sound when there is a lack of oxygen. That is, the interlocking body is removed from the blocking part by the deflection force of the bimetal, the switch is turned on by the spring force, and the alarm is turned on or sounds, or the solenoid is used to extinguish the fire.

In addition, since the structure is such that the interlocking body does not move while the temperature is decreasing due to the heat deformation element, conversely, even when the temperature is rising, such as during ignition, the heat deformation element does not touch the interlocking body. , the tip of the bimetal was bent to overcome the interlocking body. Because of this, there is a risk that the bimetal may deform, so the door will open freely in the direction in which the bimetal shifts due to temperature rise, but will not open in the opposite direction. By providing it at the tip of the door, even when the bimetal hits the interlocking body during the temperature rise at the initial stage of ignition, the one-way opening door will open and the bimetal will be able to smoothly overcome the interlocking body.

Also, when setting the interlocking body to the stop section of the guide plate, use a compression spring that pushes up the interlocking body and simultaneously rotate the interlocking body toward the stop section, and apply a rotational force to this spring in the direction of the stop section. By providing this, the interlocking body can be rotated in the direction of the stop portion and set in the stop portion simply by pushing up the interlocking body.

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

In the figure, l is a wick that sucks liquid fuel from the 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 4 is provided at the upper end of the cylinder.

A heat deformable element 5 (
Here, it is explained using a bimetal, and it is provided so as to be in contact with the - end of the interlocking body 8 which is interlocked with the switch 6. This interlocking body 8 is provided with a spring 10 that urges downward and compresses it (a turning effect can be obtained even with its own weight), and this force is 1@ to push down the interlocking body 8. A switch 6 is provided at the lower end of the interlocking body 8 via an operating frame 9. The power supply 24 is directly connected to this switch 6.
and an alarm 25 or solenoid 30.

The tip of the interlocking body 8 has an inverted shape so that it is set in the stopper 13 when the oxygen deficiency detection device is set. The top 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 attached to the interlocking body 8.
It is fixed.

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

Also, at the tip of the bimetal 5 in contact with the interlocking body 8, a one-way opening door 12 is provided via a shaft 23.
3 as a fulcrum, these 1 to 12 are freely opened in the direction of temperature rise and deviation, and conversely closed in the direction of temperature decrease.

Further, the operating frame 9, which is disposed at the lower end of the interlocking body 8 so as to be movable about the shaft 16, usually has a fire extinguishing lock lever 1.
5. It is provided so that it can be moved by contacting or using a device,
This normal fire extinguishing lock lever 15 is configured to move up and down via a shaft 16, and an operating knob 17 is provided at the other end.

A lever (not shown) for moving the 16 shafts 1 up and down is also provided.

Further, an empty position lock knob 18 is provided at the other end of the operating frame 9 provided at the lower end of the interlocking body 8.
Reference numeral 8 denotes a shaft that is guided as a fulcrum 20 so as to be movable along an inclined surface 21 provided in the vacant position lock guide 19.

The operation of the above configuration will be explained next.

During steady combustion, the temperature on or near the outside surface of the combustion tube 4 is as shown in Figure 2. If the temperature is maintained at < Tt or an oxygen-deficient state occurs, due to the lack of oxygen in the combustion air,
The combustion reaction near the tip of the wick 1 becomes slower, the reaction temperature lowers, and the amount of combustion decreases.

Therefore, the temperature on or near the outside surface of the combustion tube 4 decreases as shown at 12. Here, we use this temperature change to deflect the bimetal 5 provided near the surface of the combustion n4 in contact with it, and use the deflection force of this bimetal 5 to generate oxygen deficiency, as shown in Figure 3. When the interlocking body 8, which has an inverted shape at the tip, is rotated in the direction of the arrow by the deflection force of the bimetal 5, the interlocking body 8 with the inverted shape is rotated.
When the spring falls off due to force or its own weight, the switch 6 provided at the lower end of the interlocking body 8 is activated, and the alarm 25 lights up or sounds, or the solenoid 30 extinguishes 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 j2 will open, so that the interlocking body 8 can be climbed over without difficulty.

Next, when setting the anti-seismic automatic fire extinguishing device 7 in the case of oxygen deficiency, when the interlocking body 8 is pushed away through the operating frame 9, the interlocking body 8
The reversely shaped tip of f! is automatically stopped by the rotational force of the compressing spring IO. It can be rotated in the FI+3 direction and set at the stop.

Further, an operating frame 9 is provided at the bottom of the interlocking body 8,
The other end of this operating frame 9 is usually equipped with a fire extinguishing lock lever 15 or a shaft 1.
When the operating knob 17 is raised in the extinguishing direction through the extinguishing mechanism 6, the interlocking body 8 is moved.When the operating knob 17 is pushed up during normal extinguishing, the interlocking body 8 is pushed away via the operating frame 9 by the extinguishing lock lever 15. Even if the temperature drops during normal extinguishing, the oxygen deficiency detection device 7 will lock down so that it cannot operate.

Further, a heavy lock knob 18 is provided at the lower part of the interlocking body 8, and if this vacant position lock knob I8 is set along the inclined surface 21 of the vacant position lock guide 19 in the direction of the arrow, Even if the interlocking body 8 is pushed up and the temperature drops when it is empty, the anti-seismic automatic fire extinguishing device 7 will not operate.
It is possible to vacate the position completely.

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 removed from the stopper part by the biasing force of the bimetal in an indoor oxygen-deficient condition that is considered to be dangerous. A switch is actuated by the force of a spring installed in the body, and an alarm or solenoid can be used to warn of oxygen deficiency or extinguish the fire in a responsive and appropriate manner.

Furthermore, even when igniting, the interlocking body can be smoothly climbed over by the one-way opening door without bending the bimetal or the interlocking body.

In addition, to set up a fire extinguishing system in the event of oxygen deficiency, simply push up the interlocking body using the operating frame, and the reverse-shaped tip of the interlocking body will automatically rotate toward the stopper due to the rotational force of the spring and set into the stopper. I can do something.

Also, when normally extinguishing a fire, simply raise the operating knob in the direction of extinguishing, and the operating frame will push the interlocking body to release the fire extinguishing device in the event of oxygen deficiency.
), and the oxygen deficiency detection device will not operate during normal fire extinguishing.

In addition, when the wick is empty, by setting the empty lock knob, the operating frame or interlocking body is pushed away, and the fire extinguishing device is fixed in the event of oxygen deficiency, preventing it from operating, making it possible to completely empty the wick. etc. are useful.

[Brief explanation of the drawing]

Figure 1 is a side cross-sectional view of the main parts of the safety device of an open type combustor according to an example of the unexploded IJJ, and Figure 2 is the surface of the combustion tube during oxygen starvation of the safety device of the open type combustor according to unexploded '11. 3 and 4 are perspective views of essential parts of the 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, 4...Combustion cylinder, 5...8
Deformable element, 6... switch. 8... Interlocking body, 10... Spring, ]3...
・To section 1, 30...to solenoid 1. ) b Applicant Hitachi Thermal Appliances Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] 1) A core guide tube (2) and a core outer tube (3) that guide the core (1).
) mounted on the combustion tube (4); a heat deformable element (5) that moves when it comes into contact with the outside or senses temperature changes in the vicinity when there is a lack of oxygen in the room;
and an interlocking body (8) that operates a switch (6) connected to a solenoid (30) or an alarm (25) in response to the heat deformable element (5), and the interlocking body (8) The locking part (13) that locks the heat deformable element (5)
A safety device for an open type combustor, which is characterized by being installed near the combustor. 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 that urges the interlocking body (8) downward. 3) A patent in which the upper end of the interlocking body (8) is shaped like an inverted L, and the interlocking body (8) is provided with a spring (10) that moves the interlocking body (8) toward the locking portion (13). A safety device for an open type combustor according to claim 1.