JPS58104424A - Oil stove - Google Patents

Abstract

PURPOSE:To reduce the offensive smell given off when the fire of oil stove is put out by an arrangement wherein a combustion air supplying fan installed in the combustion unit which discharges exhaust gas in the room to be heated is driven for a predetermined time after the fire of the stove is put out. CONSTITUTION:When putting out fire of the stove, a lever 4 is released to lower wick 3 to put off fire. Since the fire put-off operation is made by changing over the operating switch from a position (a)-(c) another position to (a)-(b), a fan motor 17a is energized with an electric power through a closed temperature switch 26 and a change-over contact 38a of a relay 38 occupying a position (d)- (e). Thus, if the combustion air is supplied by the fan motor 17a when fire is put out, the oil vapor filled in a fire pan 10 is burnt by the combustion air. By this arrangement, it is possible to prevent the generation of offensive smell when the fire of the stove is put out.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion device, and its purpose is to reduce fire extinguishing odor.

Conventional combustion equipment that releases exhaust gas into a room has a large odor due to the unburned gas produced when extinguishing a fire, and is also a safety concern because the unburned gas contains harmful gases such as monoacid and arsenic. was there.

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 FIG. 1, 1 is a fuel tank, and fuel 2 in the tank 1 is sucked up by capillary action in a cylindrical wick 3. The lamp wick 3 is connected to a lever 4 of a wick up/down mechanism, and is normally biased by the action of a spring 5 so that the upper part of the lamp wick 3 is located at one circle of the fuel tank. A solenoid 7 holds a lever 4 in a state in which the lamp wick 3 is pushed upward simultaneously with the ignition operation, and 7 is a cylindrical ventilation cylinder having a vent 8, which serves as a guide for the vertical sliding of the lamp wick 3. 9 is a large number of pores 10
11 is a cylindrical inner flame tube.

It has a large number of primary air supply holes 12. 13 is a cylindrical outer flame cylinder having a large number of primary air supply holes 14;

16 is a cylindrical outer cylinder, 16 is a cylindrical combustion cylinder, 17 is a blower fan, and 17a is a blower motor. 018 is a ventilation port 1.
9 is a disc-shaped wind partition plate, 2o is a cylindrical air blowing guide, 21 is a mounting stand, and 22 is the combustion section and blowing fan 17.
An external case is installed on the stand 21 so as to cover the suction port 23ff near the blower fan 17: and the blower guide 20.
A blower outlet 24 is provided in a portion facing the opening. 251
-j An ignition heater used as an example of an ignition system, 26 a temperature switch that opens when the temperature is low and closes when the combustion part rises, and 27 an anti-seismic automatic fire extinguishing system used as an example of a safety device. show.

Figure 2 shows the electrical circuit diagram of this combustion device.It has a 28-pin power plug, a 29-pin power plug, and a 29-pin operation switch that can be switched from I port to IH by pressing the lever 4, and the contact C is connected to the circuit of the solenoid 6, etc. The contact port is connected to the @degree switch 26, and the common contact A is connected to the power source.

30 is a power transformer, 3'1 is a full-wave rectifier diode bridge, 32 is a smoothing capacitor, 33 is a Zener diode for stable r-power supply, and 34 is a photoelectric capacitor 3.
A comparator for a timer with an output switched by #'J at charging IE of 5, a transistor driven by a 36-digit comparator 34, and a first relay driven by a 37-digit transistor 36 and having a normally open contact 37a. . 38 is a second relay having a switching contact 38ai, the common contact 2 of this switching contact 38a is connected to the blower motor 17a, and the normally closed contact E is connected to the normally closed contact port of the operation switch 29 via the temperature switch 26. The normally open contact is connected to the normally open contact C of the operation switch 29.

Reference numeral 27a indicates a contact point of the anti-seismic automatic fire extinguishing system a27, which is closed during normal operation and opened by vibration, and the blower motor 17a is connected to a power source via this contact point 27a.

Next, the operation of the above configuration will be explained. First, connect the power plug and lug 28 shown in Fig. 2 to the power outlet, and then push down the lever 4 shown in Fig. 1, and the operation switch 2e shown in Fig. 2 will switch from E to IH, and the power transformer 30 [
Power is applied. Therefore, a voltage is generated in the low voltage circuit at the bottom of FIG.
Since the potential connected to the θ input of 4 is lower than the 2 input, the output of the comparator 34 becomes Hi, the transistor 36 is turned on, the relay 37 is energized, and the normally open contact 37a is closed. Therefore, the ignition heater 26 is energized via the contact 37a. At this time, since the lamp wick 3 is pushed above the outer fire pan 9 by the operation of 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 by its adsorption action, and combustion continues. Also relay 38
is energized, and the switching contact 39a switches from the knee to the knee.
The blower motor 17a is also energized, the blower fan 17 rotates, and the lice are blown downward along the blower guide 20 in FIG. At this time, due to the Venturi effect of the air blown out, the combustion exhaust gas is sucked in as shown by the broken line, mixes with the air from the blower fan 17, and is blown out from the outlet 24 as warm air, while due to the Penn Cherry effect. Combustion air is forcibly sucked and supplied from the vent 8 of the ventilation cylinder 7.

Then, the capacitor 36 is sufficiently photoelectrically charged.

When the potential of the O input of the comparator 34 becomes higher than the potential of the input, the output of the comparator 34 changes from Hi to Lo.
Then, the transistor 36 is turned off, the relay 37 is also turned off, the normally open contact 37a is opened, the energization to the ignition heater 26 is stopped, and the ignition state shifts to the combustion state. Note that the temperature switch 2e is closed due to the temperature rise in the combustion section.

Next, when extinguishing the fire, release the lever 4 and lower the wick 3 to extinguish the fire. To extinguish the fire, switch the operation switch from E-H to E-E, so the above-mentioned closed temperature 1! The blower motor 17a is energized through the contacts 2 and 2 of the switching contact 38a of the switch 26 and the relay 38, and the unburned gas generated during extinguishing the fire is combusted. In other words, when the fire is extinguished by lowering the wick, the fire pan 10 is filled with unburned gas, and normally the air supply to this unburned gas is suddenly reduced (because there is no combustion draft). ), the combustion cannot continue, and the fire is extinguished, and the unburnt gas is released as is. However, as mentioned above, if combustion air is supplied by the blower motor 17a at the time of extinguishing the fire, The petroleum vapor that fills the 1o part obtains this air and burns, resulting in the effect of odor prevention. After the unburned gas is completely combusted as described above, when the temperature of the combustion section decreases and the temperature switch 26 is opened, the supply of electricity to the blower motor 17a is stopped. Further, when the anti-seismic automatic fire extinguishing device 27 is activated and the contact 27a is opened, the energization to the solenoid 6 is stopped and the holding of the lever 4 is released to extinguish the fire, but at this time the contact 27a
Since this is open, the blower motor 17a is not energized even if the temperature switch 26 is closed, unlike during the normal fire extinguishing process.

This is to satisfy the JIS standard for extinguishing time when falling over and when an anti-earthquake automatic fire extinguishing system is activated, and it was 1 inch! In #f, when the anti-seismic automatic fire extinguishing device 27 is activated, the fire extinguishing time is automatically reset. If there is a problem with this, you can solve this problem by using a manual reset method.As mentioned above, according to Himi AA, when extinguishing a fire, the blower motor is energized and unburned gas is burned, causing odor and harmful odor. A very large effect can be expected by reducing the intermittent generation of gas. Furthermore, conventionally, when extinguishing a fire, hot air rises and the temperature of the top plate of the blower motor rises, but according to the present invention, the temperature rise during extinguishing can be reduced, making it safer.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a combustion device according to an embodiment of the present invention;
FIG. 2 is an electrical circuit diagram of the same. 1...Φ・-tank, 3...e...light wick, 4...
...Lever, 60...Solenoid, 17a...
...Blower motor, 25...e0 ignition heater, 26.
... Temperature switch, 27 ... Anti-seismic automatic fire extinguishing device, 28 ... Power plug, 29 ...
・Operation switch, 3o...e・Power transformer, 38
1111111111@Relay. Figure 1 Figure 2? 9 / / / I---11---1---I7/

Claims (3)

[Claims] (1) A combustion device in which a blower for supplying combustion air is provided in a combustion section that releases exhaust gas indoors, and the blower is driven for a certain period of time after a fire extinguishing operation during normal fire extinguishing. (2) The combustion device according to claim 1, wherein a contact point of an anti-seismic automatic fire extinguishing device is interposed in the current supply circuit to the blower. (3) The normally closed contact of the operation switch that closes when the fire is extinguished, the Im[switch that closes when the temperature of the combustion part rises, the normally closed contact of the relay that closes when the fire is extinguished, and the seismic automatic fire extinguisher that opens when an abnormality occurs. The combustion device according to claim 2, wherein a blower is interposed in a series circuit in which normally closed contacts of devices and the like are connected in series.