JPS6146732B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion control device that suppresses the generation of harmful gases when combustion starts and stops, is easy to operate even by the elderly and children who are weak, and is The object of the present invention is to provide a device configured to momentarily interrupt combustion.

First, a conventional example will be explained using FIGS. 1 and 2.

As shown in FIG. 1, the conventional combustion control device has a power switch 1, which closes in conjunction with the power switch 1, and
A second contact 2 that opens after a certain period of time or after detecting a certain temperature, a holding means 3 for holding the wick (6 in FIG. 2) in the combustion position, a power supply connection terminal 4, and an ignition means. It consists of 5. FIG. 2 shows an example of a lamp wick and the holding means 3 described above. This figure 2 shows a cylindrical lamp wick 6, a cylindrical wick guide 7, an outer flame tube 26 made of coarse wire mesh, an inner flame tube 27, and a cylindrical outer flame tube made of heat-resistant glass. The tube 25, the first lever 8, the knob 9 that lowers the first lever 8, and the second lever 11
, a third lever 14 , a fourth lever 16 ,
The first pin 17 fixed to the lamp wick 6 and the spring 18
, a solenoid 19, a second pin 20 fixed to the first lever 8, a fixture 21, etc. are shown.

Next, the operation of the configuration shown in FIGS. 1 and 2 will be explained.

In Figure 2, when knob 9 is pushed downward, the
lever 8 is lowered. The motion is transmitted to the second lever 11 via the first point of action 10, and the second lever 11 rotates clockwise about the fulcrum 13. The operation of the second lever 11 is transmitted to the third lever 14 via the second point of action 12, and the third lever 14 is rotated about the fulcrum 15 against the spring force of the spring 18. Rotate clockwise. The rotational movement of the third lever 14 causes a fourth lever 16 fixed to the fulcrum shaft 15 to rotate.
The rotational movement of the fourth lever 16 is converted into a vertical linear movement via a first pin 17 fixed to the lamp wick 6. Since the first pin 17 is fixed to the lamp wick 6, the lamp wick 6 is pushed up from inside the wick guide 7 and reaches a position where it can burn. Here, when the first lever 8 is lowered, the power switch 1 is turned on by the guide 22 attached to the first lever 8, and voltage is applied to the holding means 3 shown in FIG. Solenoid 19 which is an example of holding means 3
is energized, one end of the fixture 21 is lowered around the fulcrum 24 against the spring force of the spring 23, and the other end is rotated counterclockwise to move the second lever 8 fixed to the first lever 8. Lock pin 20. Therefore, the wick 6
is held in the combustion position by the first lever 8, the second lever 10, the third lever 14, the fourth lever 16 and the solenoid 19. In this state, kerosene is drawn up by the wick 6 and ignited by the ignition means 5. A combustion flame ignited by the lamp wick 6 is formed between the inner flame tube 27 and the outer flame tube 26. Inner flame tube 2
7 has an inner flame hole 30 and a lower support part 2 of the outer flame tube 26.
8 is provided with an outer flame hole 29 through which combustion air flows. Therefore, the outer flame tube 26, which is made up of a coarse wire mesh tube, has a small heat capacity and becomes red hot. The outer tube 25 is made of heat-resistant glass and radiates the radiant heat of the red-hot outer flame tube 26 to the outside.

Now, let's take a look at the transient combustion state from just after ignition until a stable combustion state is reached in the above-mentioned combustion device. Immediately after ignition, the amount of kerosene vaporized from the wick 6 is small, and since there is a natural draft state, the amount of air flowing in is also small, and the flame itself may lift, making it extremely unstable. Also, when looking at the wire mesh outer flame tube 26,
When the part near the wick 6 becomes red hot and reaches a stable combustion state, the amount of vaporized kerosene increases and is mixed with the air flowing in from the upper part of the inner flame hole 30, so that the entire outer flame tube 26 becomes red hot. FIG. 6 shows experimental data in which the transient combustion state was evaluated based on the amount of carbon dioxide in the combustion waste gas. That is, in the rise after ignition as shown by the line in FIG. 6, combustion is unstable and the amount of carbon dioxide generated is small, but rather the amount of carbon monoxide generated is large.
As the steady state approaches, the amount of carbon dioxide generated increases and becomes saturated. In this way, the conventional type takes a long time of ten or more minutes to reach a stable state, and during that time it emits a large amount of gases such as carbon monoxide and unburned gas that are harmful to the human body.

Next, it is in a stable combustion state and starts heating any room that is a heating load. Even if the room temperature gradually rises and reaches the optimum temperature, the amount of combustion remains constant and cannot be controlled, so the room temperature rises. The only way for users to control the room temperature is to stop combustion, but after extinguishing the wick 6, the residual heat from the wick 6 may produce vaporized gas, creating a strange odor, or in severe cases, aldehyde gas may be produced. It stings the eyes and can even be painful, so it is not a good idea to extinguish the fire frequently.

The present invention eliminates these conventional drawbacks, and one embodiment thereof will be described below with reference to FIGS. 3, 4, and 5. In addition, in FIGS. 3 to 5, the same parts as in FIGS. 1 and 2 are given the same numbers. The configuration of the combustion device will be explained with reference to FIG. 3, and the same numbers as those in FIG. 2 are given the same numbers, and the explanation will be omitted.

In FIG. 3, a disc-shaped baffle plate 31 and a fan 32 are provided above the cylindrical lamp wick 6 and the cylindrical lamp guide 7. FIG. 4 also shows a power switch 1, a second contact 2 that closes in conjunction with the power switch 1 and opens after a certain period of time or when a certain temperature is detected, and a lamp wick 6 in the combustion position. holding means 3, power supply connection terminal 4, and ignition means 5
, a fan 32 that supplies combustion air, and a room temperature detection means 3 that obtains a temperature signal from the room that is the heating load.
4 and a control circuit 33 that controls the rotation speed of the fan 32 that supplies combustion air based on the signal obtained by the room temperature detection means 34.

Next, the operation of the configuration of the present invention will be explained.
The operation in FIG. 3 is as described above. Therefore, the third
In the figure, the power switch 1 closes at the same time as it detects that the lamp wick 6 has reached the combustion position.
Then, the solenoid 19, which is an embodiment of the holding means 3, is energized, and the lamp wick 6 is moved between the first lever 8 and the second lever.
It is held via the lever 11, the third lever 14, and the fourth lever 16. In addition, since the fan 32 is also energized, combustion air is forcibly blown against the wind baffle plate 31, and from around the baffle plate 31, the wick guide 7
It passes further outside and exits into the room that is the heating load space. At this time, there are many holes in the upper part of the wick guide 7, and combustion air flows in due to the pressure difference with the outside, hits the wick 6, and promotes vaporization of kerosene. Then, electricity is applied to the ignition means 5 through the second contact 2, and the vaporized fuel generated from the lamp wick 6 is ignited. At this time, since the fan 32 blows the air from directly above the baffle plate 31 attached to the upper part of the wick 6, the amount of vaporization of kerosene in each part of the wick 6 is uniformly promoted. Therefore, the combustion characteristics after ignition are very good, and the amount of harmful carbon monoxide generated is small.
After a certain period of time or after reaching a certain temperature, the second contact 2 opens and the ignition means 5 is de-energized. Also,
Since the control circuit 33 connected in parallel to the ignition means 5 and the holding means 3 is also energized, the temperature signal from the room temperature detection means 34 that detects the temperature of the room, which is the heating load, is used to generate electricity via the control circuit 33. The rotation speed of the fan 32 is controlled. Therefore, when the temperature of the heating load space is closer to the optimum temperature, the rotation speed of the fan 32 is controlled to the maximum, and a large amount of combustion air is supplied to the lamp wick 6.
Increases the amount of kerosene vaporized. Conversely, when the optimum room temperature is reached, the room temperature detection means 34 controls the rotational speed of the fan 32 to the minimum, thereby reducing the amount of vaporized kerosene. FIG. 5 shows an embodiment of the control circuit 33 described above. The control circuit 33 includes a comparator 53, a diode bridge 35, and capacitors 36, 37, 41,
48, 50 and resistance 38, 40, 42, 43, 4
4, 45, 47, 49, 51, 54, 55, a transistor 56, diodes 52, 58, a Zener diode 39, a relay 57, and a room temperature setting volume 46.

Next, the operation of the above configuration will be explained. The room temperature detection means 34 and the resistor 40 detect temperature changes in the heating load space by voltage changes. Resistance 42, 43, 4
4, 45 and a room temperature setting volume 46, an arbitrary room temperature can be set, and is used as a reference potential.
A comparator 53 compares the potential at the connection point between the room temperature detection means 34 and the resistor 40 and the potential at a room temperature setting volume 46 whose reference potential can be changed arbitrarily. When the room temperature is lower than the level, the output of comparator 53 becomes "HIGH", causing transistor 56 to conduct through resistors 54 and 55. So, relay 57
is excited, and the relay contact 57a in FIG. 4 closes on the maximum rotation speed side of the fan 32. Moreover, when the optimum room temperature is reached, the output of the comparator 53 becomes "LOW",
The transistor 56 becomes non-conductive, and the relay contact 57b in FIG. 4 is connected to the minimum rotation speed side of the fan 32. When it is desired to immediately stop combustion in the event of an abnormality such as a power outage or an earthquake, the power to the holding means of the lever that holds the wick is cut off, and the wick is instantly moved to the extinguishing position. Therefore, there is no risk of fire or the like.

Further, since the plurality of levers for raising and lowering the wick can be moved in a straight line with short strokes, it can be easily operated by the elderly or children who are weak, making it extremely convenient to use.

According to the invention, a sixth line was obtained. In other words, if we evaluate the transient combustion state from immediately after ignition until a stable combustion state is reached by the amount of carbon dioxide, we can see that the wick 6 is
A stable state is reached in less than half the time when exposed to
The amount of carbon monoxide and unburned gas produced has also decreased. Good characteristics are obtained because the fan 32 blows from directly above the baffle plate 31 to uniformly accelerate the vaporization of the kerosene from the wick 6.

In addition, the room temperature detection means 34 detects the heating load in the room.
The fan 32 is constantly monitored and the rotation speed of the fan 32 is controlled by the control circuit 33 so as to blow out hot air at a constant temperature, and the optimum temperature can be maintained. Further, by proportionally controlling the rotational speed of the fan 32 that supplies the amount of combustion air, more fine control can be achieved.

According to the present invention described above, the following effects can be obtained.

(1) A fan blows wind from the top of a baffle plate placed above the wick, and the suction force of this wind sends combustion air to the wick, so the air flow rate remains constant and when combustion begins. The generation of carbon monoxide can be stably suppressed, and the cooling of the wick during extinguishing can be accelerated, and the generation of aldehyde gases can also be suppressed.

(2) The lever for raising and lowering the wick can be moved in a straight line, so it can be easily operated even by children.

(3) During a power outage, the power to the holding means that holds the wick is cut off, which instantly interrupts combustion and eliminates the risk of fire.

[Brief explanation of the drawing]

Figure 1 is a circuit diagram of a conventional example of a combustion control device;
Figure 3 is a configuration diagram of a conventional example of a combustion apparatus, Figure 3 is a configuration diagram of a combustion apparatus to which an embodiment of the combustion control apparatus of the present invention is applied, Figure 4 is a control sequence diagram of the combustion apparatus, and Figure 5 is The same control circuit diagram and FIG. 6 are combustion characteristic diagrams for explaining the effects of the present invention. 6... Lamp wick, 3... Holding means, 32... Fan, 33... Control circuit, 34... Room temperature detection means.

Claims (1)

[Claims] 1 A lamp wick that is always energized to move to the extinguishing position, a lever that moves the lamp wick up and down in a linear manner, and the lever that pushes the wick from the extinguishing position and reaches the ignition position, energizes and stops the operation of the lever. a holding means for holding the lamp wick and releasing the stop when the electricity is not supplied; a baffle plate that covers the upper part of the lamp wick; A combustion control device comprising a fan that sends combustion air to the lamp wick using suction power.