JPH0345010Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Technical Field> The present invention relates to a vaporizing oil heater such as a fan heater that vaporizes oil using a vaporizer and burns the vaporized gas, and particularly relates to reducing odor when extinguishing the heater.

<Prior Art> Conventionally, as a device for reducing the odor of this type of oil heater, there has been one in which a catalyst is provided above the combustion device and the unburned gas generated when the device is extinguished is adsorbed onto the catalyst.

However, in the above device, the adsorption performance decreases as the cumulative usage time increases. That is, the catalyst itself has a limited lifespan, and if its performance deteriorates, it becomes difficult to adsorb unburned gas, and the adsorption performance cannot be restored unless the catalyst itself is replaced. As mentioned above, conventional odor reduction devices have the disadvantage that they have a limited lifespan and must be replaced.

<Purpose of the invention> The invention was made with the aim of providing a kerosene heater that solved the above problems, and in order to achieve this purpose, the kerosene heater of the present invention has the following features:
This improves the combustion control of the original combustion section of the equipment without using additional equipment such as odor reduction equipment or catalysts.

<Embodiment of the invention> Hereinafter, an embodiment of the invention will be described in detail with reference to the drawings. Figure 1 shows an example of the combustion section of a kerosene heater. The heater is now in combustion mode. Oil pan 9
The kerosene is passed through the oil pipe 7 by the pump 8, reaches the vaporizer 4, is vaporized and becomes gas, and is sent to the nozzle 3.
The fuel is ejected into the burner 2, exits from the burner port, and is combusted. This series of operations maintains the combustion state.

Now, for example, if the combustion state of the equipment is weak combustion, the amount of oil fed by the pump 8 is constant, as shown at point C shown in the characteristic diagram of oil amount per hour in FIG.
Furthermore, in conventional control, in FIG. 2, when the user of the device presses the fire extinguishing switch 14 to extinguish the fire, the microcomputer 15 of the control circuit section 13 detects this, and the microcomputer 15 stops the pump drive circuit 12. Stop pump 8. At the same time, the microcomputer 15 closes the solenoid valve 5 to extinguish the fire. However, before the pump 8 stops, a large amount of the unburned gas ejected from the nozzle 3 remains in the burner 2 and is extinguished. The unburned gas left in the burner 2 gradually came out of the burner 2 and was adsorbed by the catalyst.

In the present invention, when the user of the device presses the fire extinguishing switch shown in Fig. 2 14 to extinguish a fire, the microcomputer 15 of the control circuit section 13 detects that the switch has been pressed, and the microcomputer 15 enters into control to extinguish the fire. .
That is, as shown in FIG. 4, the microcomputer 15
A signal is sent to the pump circuit 12 to bring the combustion state lower than the current combustion state. In other words, the amount of oil fed by the pump 8 is reduced. The oil amount C shown in Fig. 3 is at the time of weak combustion.
Point A is the point at which the fire extinguishing switch is pressed, and at this time, the microcomputer 15 reduces the oil amount in several steps or steplessly, as shown by the oil amount D, which is controlled in several steps by the signal sent from the microcomputer 15. In other words, the combustion amount is reduced to several levels lower than weak combustion. The microcomputer 15 stops the pump circuit 12 at the time B when the flame detection device 11 is activated, that is, when the flame is extinguished, and simultaneously closes the solenoid valve 5 to completely extinguish the fire. That is, the microcomputer 15 gradually reduces the amount of oil in the pump until the flame goes out, thereby reducing the amount of vaporized gas ejected from the nozzle 3, and reduces the amount of unburned gas 1 in the burner 2 at the time the flame goes out. This is to keep the amount to a minimum. As a result, only a small amount of unburned gas exits from the burner 2 to the outside, and the odor is significantly reduced.

<Effects> According to the present invention, after a fire extinguishing instruction is given, the amount of oil supplied is reduced to lead to extinguishment, the extinguishment is detected by a flame detection device, and the detection output is used to perform a fire extinguishing action to suppress the generation of vaporized gas from the nozzle. By doing so, the fire can be extinguished in a state that minimizes odors, regardless of the amount of combustion before extinguishing.

[Brief explanation of the drawing]

Figure 1: A configuration diagram of the combustion section of the heater of the present invention. Second
Figure: Same main part block diagram. FIG. 3: A characteristic diagram showing the relationship between the amount of oil fed and time used to explain the operation of the present invention. Figure 4: Flowchart for explaining the operation of this example. 1... Unburned gas in the burner, 2... Burner, 3... Nozzle, 4... Carburetor heater, 5...
Solenoid valve, 6... Relief pipe, 7... Oil feed pipe, 8... Pump 9... Oil pan, 10...
Oil tank, 11...Flame detection device.

Claims (1)

[Scope of Claim for Utility Model Registration] In a vaporizing oil heater that adjusts the combustion amount by controlling the amount of oil sent to the vaporizer by the oil feeding means, the oil feeding means controls the oil feeding by the command output of the extinguishing instruction means. A control means that extinguishes the fire by reducing the amount of fuel from the normal combustion state, a flame detection device that detects extinguishment, and an output from this flame detection device that stops oil supply and prevents the generation of vaporized gas from the nozzle. A vaporizing oil heater comprising: a fire extinguishing means that performs a fire extinguishing action;