JPS6248771B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a combustor, and is aimed at shortening the extinguishing time when extinguishing a fire by falling.

In conventional combustors, when normally extinguishing a fire, the ignition device is activated to prevent combustion and reduce odor.
In the event of a fall and extinguishing a fire, the ignition system was shut down to keep the extinguishing time within JIS standards. However, with increased combustion volume, the heat capacity of the combustion section increases, and this conventional method reduces the extinguishing time. There was a problem that it no longer satisfied the JIS standards.

The present invention eliminates these conventional drawbacks, and one embodiment of the present invention will be described below with reference to a wick-type liquid combustion device used in a hot-air heater.

In Figure 1, 1 is a fuel tank; tank 1
The fuel 2 inside is sucked up by the capillary action of the cylindrical wick 3. The above lamp wick 3 is the lever 4 of the wick up and down mechanism.
The spring 5 on the left side of the fulcrum is linked to the right side of the fulcrum.
Normally, the upper part of the lamp wick 3 is biased to the extinguishing position within the fuel tank 1. 6 is a solenoid that holds the left side of the fulcrum of the lever 4 while pushing the wick 3 upward at the same time as the ignition operation;
is a ventilation cylinder having a ventilation hole 8, which serves as a guide for the vertical sliding of the lamp wick 3. Reference numeral 9 is an outer fire pan having a large number of air holes 10, and reference numeral 11 is a cylindrical inner flame cylinder, which has a large number of primary air supply holes 12. 13 is a cylindrical outer flame tube having a large number of primary air supply holes 14; 15 is an outer tube; 16 is a combustion tube; 17 is a blower fan; 17a
is the blower motor. 18 is a disk-shaped wind partition plate having a ventilation hole 19; 20 is a blower guide; 21 is a stand; 22 is an exterior case mounted on the stand 21 so as to cover the combustion section and the blower fan 17; A suction port 23 is provided nearby, and an air outlet 24 is provided at a portion facing the opening of the blower guide 20. Reference numeral 25 indicates an ignition heater used as an example of an ignition device, 26 indicates a temperature switch which is closed when the temperature of the combustion section increases during low temperature time, and 27 indicates an anti-seismic automatic fire extinguishing device.

Reference numeral 28 detects the ambient temperature around the device with a temperature detection element such as a thermistor (hereinafter referred to as a room temperature thermistor) provided near the suction port 23.

Figure 2 shows the electrical circuit diagram of this combustion device.
9 is a power plug, 30 is an operation switch that can be switched from E-ro to E-HA by pressing the lower left side of the fulcrum of the lever 4, and the contact C is connected to a circuit such as a solenoid 6; is connected to the temperature switch 26, and the common contact A is connected to the power supply.

31 is a power transformer, 32 is a diode bridge for full-wave rectification, 33 is a smoothing capacitor, 3
4 is a Zener diode for a stabilized power supply; 35 is a comparator for a timer having an output that changes the charging time of the charging capacitor 36; 37 is a transistor driven by the comparator 35; 38 is a transistor driven by the transistor 37; driven by
This is a relay having a switching contact 38a. A common contact D of this switching contact 38a is connected to the ignition heater 25.

Reference numeral 27a indicates a switching contact of the anti-seismic automatic fire extinguishing system 27, and its common contact is connected to one side a of the power source, and circuits such as the power transformer 31 and the solenoid 6 are connected via a normally closed contact. Reference numeral 39 denotes a relay whose coils are respectively connected to the normally open contact 27a of the seismic automatic fire extinguishing device 27 and to one side b of the power source. Furthermore, the switching contact 39a of the relay 39 is the common contact nu of the temperature switch 26.
The normally closed contact L is connected to the normally closed contact H of the switching contact 38a of the relay 38, and the normally closed contact 3 is connected to the normally closed contact H of the switching contact 38a of the relay 38.
The normally open contact 9a and the normally open contact 38a are connected to the normally open contact C of the operation switch 30. 40 is a temperature control comparator that has an output that changes depending on the change in the resistance value of the room temperature thermistor 28, and its output becomes "Hi" when the room temperature becomes high.
becomes. 41 is a transistor driven by the comparator 40, and 42 is a transistor 4.
1 and has a switching contact 42a. The common contact W of the switching contact 42a is connected to the normally open contact C of the operation switch 30, the normally closed contact F is connected to the "strong" terminal of the blower motor 17a, and the normally open contact "Y" is connected to the "weak" terminal of the blower motor 17a. each connected. The common terminal of the blower motor 17a is connected to one side a of the power source.

Next, the operation of the above configuration will be explained. First, the power plug 29 is connected to a power outlet, and then the left end of the lever 4 is pushed down, the operation switch 30 is switched from E-ro to I-H, and the power transformer 31 is energized. Therefore, a voltage is generated in the low voltage circuit, and charging begins in the capacitor 30, but at first, the charge is not sufficiently charged, so
Since the potential connected to the input of the comparator 35 is lower than the input, the output of the comparator 35 becomes "Hi", the transistor 37 is turned on, the relay 38 is energized, and the switching contact 38a is switched from knee-ho to knee-high. . Therefore, the ignition heater 25 is energized via the contact knee. At the same time, since the upper part of the lamp wick 3 is pushed out above the outer fire pan 9 by the lever 4, the lamp wick 3 is ignited and combustion begins.

Since the solenoid 6 is also energized, the lever 4 is held in a depressed state due to its adsorption action, and combustion continues. At the same time, the blower motor 17
A is also energized, the blower fan 17 rotates, and the air is blown downward along the blower guide 20. At this time, the combustion exhaust gas is first
The air is sucked in as shown by the broken line in the figure, mixes with the air from the blower fan 17, and blows out as warm air from the air outlet 24. On the other hand, due to the benchery effect, combustion air is drawn from the air outlet 8 of the ventilation cylinder 7. Forced suction and supply will be performed.

Then, the capacitor 36 is sufficiently charged,
When the potential of the input of the comparator 35 becomes higher than the potential of the input, the output of the comparator 35 changes from "Hi" to "Lo", the transistor 37 is turned off, the relay 38 is also turned off, and the switching contact 38a changes from knee to knee. The state changes to Ni-Ho, the energization to the ignition heater 25 is stopped, and the ignition state shifts to combustion. The temperature switch 26 is closed due to the rise in temperature of the combustion section.

As the room temperature rises, the resistance value of the room temperature thermistor 28 decreases, and when the room temperature becomes higher than the set temperature, the input potential of the comparator 40 becomes higher than the input potential, and the output of the comparator 40 changes from "Lo" to "Hi".
, the transistor 41 turns on, and the relay 42
is also turned on, the switching contact 42a is switched from work to way, and the blower motor 17a is switched from "strong" operation to "weak" operation. Similarly, when the room temperature falls below the set temperature, the blower motor 17a is switched from "weak" to "strong" by the exact opposite operation. The above operations are repeated as the room temperature changes, keeping the room temperature constant.

Next, when extinguishing the fire, release the lever 4 and lower the wick 3 to extinguish the fire. At this time, the operation switch 30 switches from I-H to E-L, so the operation switch 30 switches from I-H to E-L through the closed temperature switch 26, the contact null of the switching contact 39a of the relay 39, and the switching contact N-H of the relay 38. The ignition heater 25 is energized to burn unburned gas generated during extinguishing the fire. Then, when the temperature of the combustion section falls and the temperature switch 26 is opened, the energization to the ignition heater 25 is stopped.

On the other hand, when the main body falls over and the anti-seismic automatic fire extinguishing device 27 is activated and the switching contact 27a switches from torch to torch, the energization to the solenoid 6 is stopped and the holding of the lever 4 is released. extinguish a fire. At the same time, the relay 39 is driven and the switching contact 39a is switched from null to null (and the power transformer 31
Since the current is cut off, the switching contact of relay 42a becomes a worker. )Furthermore, since the operation switch 30 switches from I-HA to E-RO in the same way as when normally extinguishing a fire, the closed temperature switch 26 and the switching contacts of the relay 39 and the relay 42a
The "strong" terminal of the blower motor 17a is energized through the switching contact worker, and the strong wind serves to blow out the small flame remaining in the combustion part when the fire is extinguished. Then, when the temperature of the combustion section falls and the temperature switch 26 is opened, the power supply to the blower motor 17a is stopped.

In the present invention, when a fire is extinguished by a fall, the blower motor can be driven to quickly blow out small flames in the combustion section, and a great safety effect can be expected. Furthermore, since the ignition heater is activated during normal fire extinguishing, extinguishing odor can also be reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a combustor according to an embodiment of the present invention, and FIG. 2 is an electrical circuit diagram thereof. 3... Light wick, 4... Lever, 6... Solenoid, 17a... Air blower motor, 25... Ignition heater (igniter), 26... Temperature switch, 27... Anti-seismic automatic fire extinguishing device (safety device), 27a...Selector switch, 29...Power plug, 30...Operation switch, 31...Power transformer, 38...Relay,
38a...Relay switching contact, 39...Relay, 3
9a...Relay switching contact, 42...Relay, 42
a... Relay contact.

Claims (1)

[Claims] 1.Equipped with a combustion section, a blower that sends combustion air to the combustion section, and an ignition device for the combustion section, the ignition device is operated for a certain period of time when the combustion section is normally extinguished, and when the combustion section is extinguished in the event of a fall, the ignition device is activated. A combustor control device that stops the operation of the combustor and operates only the blower for a certain period of time.