JP3171018B2 - Oil burner control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control device for an oil combustor such as an oil fan heater.

[0002]

2. Description of the Related Art Conventionally, as this type of control device, there is known a control device disclosed in Japanese Patent Application Laid-Open No. 2-203157. That is, when the operation switch is turned off, the combustion control unit starts the timer unit, stops the burner fan and the convection blower, sends a "close" command to the variable blade control unit, closes the outlet, and the combustion gas is convected. It is discharged to the rear after passing through the blower, so that the odor at the time of fire extinguishing is not discharged from the outlet. That is,
In the combustor which vaporizes and burns this kind of kerosene, at the moment of fire extinguishing, the mixing balance of the combustion air and the vaporized gas of kerosene as fuel is broken, and unburned gas or incomplete combustion gas is released from the hot air outlet, Odor. Also, for a while after the fire is extinguished, for example, for about one minute, while the vaporization of the fuel remaining in the vaporizer (not shown) is delayed, an odor is also generated. Therefore, as in the above-described conventional configuration, the convection blower is stopped immediately after the fire is extinguished, and the variable wing (hereinafter, referred to as an opening / closing body).
By closing, the odor at the time of fire extinguishing can be prevented from being discharged forward from the outlet of the warm air, and the odor at the time of fire extinguishing can be reduced.

[0003]

However, in the above-mentioned conventional structure, the opening and closing body starts to close when the combustion stops, so that the unburned gas at the moment of extinguishing is discharged to the front of the hot air outlet. was there.

At the moment when the fire is extinguished, even if the convection blower is electrically braked, it does not stop completely for 1 to 2 seconds due to the inertia of the blower itself. There is also a problem that a part of the flame hits the flame to extinguish the fire, thereby increasing the amount of unburned gas.

Further, since the opening / closing member is opened immediately after the fire is extinguished to perform an operation of lowering the temperature inside the main body, there is a problem that residual unburned gas which has been delayed in vaporization is discharged from the hot air outlet.

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the above-mentioned conventional structure, and has as its first object to reduce the odor at the time of extinguishing a petroleum combustor, and furthermore to provide safety against abnormalities at the time of extinguishing a fire. Securing is the second purpose.

[0007]

In order to achieve the first object, the present invention provides a combustion section for vaporizing and burning kerosene,
A fuel pump for supplying fuel to the combustion section, a burner fan for supplying combustion air to the combustion section, and a convection for blowing combustion gas from the combustion section as warm air into a room through a warm air outlet of a device body. A blower, an opening / closing body provided at the hot air outlet, a first timer section started at the same time as a combustion stop signal, a second timer section started at the same time as the first timer section times out, A combustion control unit for continuing operation of a fuel pump and a burner fan while at least the first timer unit is activated, and a combustion control unit having at least the first timer The opening / closing body is controlled to be in a closed state while the unit is in operation, the opening / closing body is kept in a closed state while the second timer unit is in operation, and the third timer unit is started in addition. While holding the angle between the closed and open, the opening and closing body control unit that holds the opening and closing body at the closed position when the third timer unit counts up, and at least the first timer unit is running While applying a brake to the convection blower, while the second and third timer units are running, rotate the convection blower at a predetermined rotation speed,
And a convection fan control unit that stops the convection fan when the third timer unit times out.

Further, in order to achieve the second object, the combustion control unit has an abnormality detection unit for detecting an abnormality of the device, and when the first timer unit detects an abnormality of the device during startup, While stopping the fuel pump, start a fourth timer unit provided in the combustion control unit, and while the fourth timer unit is starting, start the burner fan and the convection blower at a predetermined rotation speed. The opening / closing body is opened.

[0009]

According to the first aspect of the present invention, since the combustion is forcibly continued for a while after the combustion is stopped, the opening / closing member provided at the hot air outlet is closed, and the convection blower is also stopped. When the flame goes out, the fire can be extinguished without the influence of the wind from the convection blower, and the generation of unburned gas can be reduced.At the time of fire extinguishing, the open / close body is closed. Can be trapped inside the body.

Further, since the convection blower and the burner fan are operated while the opening and closing body is kept closed, the unburned gas remaining in the vaporizing cylinder and the unburned gas due to the vaporization delay of the fuel generated in the burner are delayed. Can be reduced, and the dilution and stirring can prevent the unburned gas from being concentrated and discharged from the main body.

Further, by holding the opening / closing body at a position between the open state and the closed state and operating the convection blower and the burner fan, even a small amount of unburned gas remaining inside the main body can be quickly removed from the main body. And can be discharged to a position where the person's face does not directly hit.

Further, according to the second configuration, when an abnormality occurs during fire extinguishing, the continuation of forced combustion after the combustion stop signal is input is immediately released, and the opening / closing body is set to the open position.
The convection blower and burner fan can be operated for a certain period of time to rapidly cool the main unit.

[0013]

An embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 3, reference numeral 1 denotes an apparatus main body, 2 denotes a combustion unit provided in the apparatus main body 1, a vaporizing cylinder 3 for vaporizing fuel and mixing it with combustion air, and a burner section for burning a mixed gas from the vaporizing cylinder 3. 4 5 is a fuel pump for supplying fuel into the vaporizing cylinder 3; 6 is a burner fan for supplying combustion air into the vaporizing cylinder 3; An opening / closing member provided at the outlet 8, a convection blower 9 for blowing hot air from the hot air outlet 8, a control device 10, the fuel pump 5, a burner fan 6, a convection fan 7, and an opening / closing member 9. To control the amount of combustion and start / stop of combustion.

FIG. 1 is a block diagram of the control device.
Controls the amount of combustion from strong to weak,
The combustion control section for starting the control sends a control signal to the fuel pump 5 and the burner fan 6. The combustion control unit 11 stops the combustion and simultaneously activates the first timer unit 12, while the first timer unit 11 is activated, continuously operates the fuel pump 5 and the burner fan 6, and controls the convection fan control unit 20. , The brake is applied to the convection blower 7, and the opening and closing body 9 is controlled to be closed through the opening and closing body control unit 21. Further, when the first timer section 12 times out, the fuel pump 5 is stopped, and then the second timer section 13 is started.

While the second timer section 13 is running, the opening / closing body 9 is held at the closed position through the opening / closing body control section 21 and the convection air blower 7 is operated at a predetermined rotation speed through the convection air blower control section 20.

Finally, when the second timer section 13 times out, the third timer section 14 is started. While the third timer unit 14 is running, the burner fan 6 is operated at a predetermined rotation speed, the convection fan 7 is operated at a predetermined rotation speed through the convection fan control unit 20, and the opening / closing unit control unit 21 is operated. The opening / closing body 9 is controlled to a position between the open state and the closed state.

If an abnormality (for example, an earthquake) occurs in the equipment while the first timer unit 12 is activated, the fuel pump 5 is immediately stopped, and the fourth timer unit 16 is activated.
While the fourth timer unit 16 is running, the burner fan 6 is operated at a predetermined rotation speed, and the convection fan 7 is operated at a predetermined rotation speed through the convection fan control unit 20. Further, the opening / closing body 9 is controlled to the open position through the opening / closing body control section 21.

The operation of the above configuration will be described below with reference to the flowchart of FIG. First, in step S1, a stop signal for combustion is confirmed. If the signal for stopping the combustion is not input, the operation proceeds to the next step A without performing the operation for stopping the combustion. If the combustion stop signal has been input, step S
In step 2, the first timer unit 12 is started. First timer part 1
If the device is normal without any abnormality detected in step S3 during startup, the fuel pump 5 is continuously operated in step S4, and the burner fan 6 is operated in step S5.
Is also operated to continue the combustion. Step S
At step 6, the opening / closing body 9 is controlled to the closed position, and at step S7, the convection blower 7 is braked. Step S
In step 8, the time-up of the first timer unit 12 is confirmed, and if not, steps S3 to S7 are repeated. When the first timer section 12 times out, the fuel pump 5 is stopped in step S9, and the fire is extinguished for the first time.

Here, assuming that the time from when the opening / closing body 9 changes from the open state to the closed state is, for example, 3.8 seconds, the first timer unit 12 is set to the time from when the opening / closing body 9 changes from the open state to the closed state. By setting a slightly longer time, for example, 4.0 seconds, the fire is extinguished in a state where the opening / closing body 9 provided in the hot air outlet 8 is completely closed, and at the time of fire extinguishing, the convection blower 7 is operated after the brake is applied. In addition, when the fire is extinguished, the flame from the convection blower 7 does not blow out and the generation of unburned gas can be suppressed. Furthermore, since the open / close body 9 is completely closed and the convection blower 7 is also stopped, the unburned gas which is slightly generated is not discharged forward from the hot air outlet.

Next, in step S10, the second timer unit 13
Is started, the convection blower 7 is operated at a predetermined rotation speed in step S11, and the burner fan 6 is operated at a predetermined rotation speed in step S12. That is, for example, if the second timer section 13 is set to 16 seconds, the convection blower 7 and the burner fan 6 are operated at a predetermined rotation speed for 16 seconds, for example, with the opening and closing member 9 completely closed. Therefore, the wind is sent into the vaporization cylinder 3 and the burner unit 4, and the air is rapidly cooled, so that the generation of unburned gas due to the delay of vaporization is prevented, the dilution is agitated, and the odor from the hot air outlet 8 is reduced. It will be significantly reduced.

Further, when the second timer section 13 times out, the third timer section 14 is started in step S14,
While the third timer unit 14 is running, the opening / closing body 9 is held at a position between open and closed in step S15. In this state,
In step S16, the convection blower 7 is operated at a predetermined rotation speed, and in step S17, the burner fan 6 is also operated at a predetermined rotation speed. Here, assuming that the position of the opening / closing body 9 is horizontal (0 degree with respect to the horizontal line) and the closed state is vertical (-90 degrees with respect to the horizontal line), step S15
In this case, the opening and closing body 9 is set to, for example, -45 degrees. By doing so, a small amount of unburned gas remaining in the main body 1 is discharged downward from the hot air outlet 8.
The body does not face the face of the human body directly, the direct odor can be reduced, and the residual heat in the main body 1 can be quickly cooled because the opening / closing body 9 is located between the open state and the closed state.

Next, if an abnormality of the equipment, for example, an anti-earthquake is detected in step S3 while the first timer section 12 is running, a very dangerous condition such as a fall of the equipment is expected. 1 needs to be cooled. Therefore, the fuel pump 5 is stopped in step S19, the fourth timer unit 16 is started in step S20, and the convection blower 7 is turned on in step S21.
At 22, the burner fans 6 are operated at predetermined rotation speeds, and at step S 23, the opening / closing body 9 is set to the open position, and the inside of the main body 1 is cooled quickly. If the fourth timer section 16 has not timed out in step S24, the inside of the main body 1 continues to be cooled, and when the fourth timer section 16 has timed out, the convection blower 7 and the burner fan 6 are stopped in steps S25 and S26. Let me
In step S27, the device is stopped by setting the opening / closing body 9 to the closed position. The fourth timer section 16 sets a time period for sufficiently cooling the inside of the main body 1 when the apparatus stops during combustion, for example, 10 minutes.
The value is set to about 0 seconds to suppress unnecessary movement.

[0023]

As is apparent from the above description of the embodiment, according to the first configuration of the present invention, combustion is forcibly continued for a while even if a combustion stop signal is received, and hot air is blown out during that time. The opening and closing body provided in the mouth is closed and the convection blower is also stopped, so that when the flame goes out, the fire can be extinguished without the influence of the wind from the convection blower, and the generation of unburned gas can be reduced, and at the time of the fire In this case, since the opening / closing body is in the closed state, the unburned gas is confined in the main body, and the odor from the hot air outlet can be drastically reduced.

Further, since the convection blower and the burner fan are operated while the opening and closing body is kept closed, the unburned gas remaining in the vaporizing cylinder and the unburned gas due to the vaporization delay of the fuel generated in the burner are delayed. By reducing the generation of gas and diluting and stirring, it is possible to prevent unburned gas from being concentrated and discharged from the main body.

Further, by holding the opening / closing body at a position between the open state and the closed state and operating the convection blower and the burner fan, even a small amount of unburned gas remaining inside the main body can be quickly removed from the main body. The air is blown downward from the hot air outlet, so it is not directly discharged to the human body, especially at the face, etc., so not only the odor but also the feeling of cool air for cooling the main body can be reduced, and the main body can be quickly removed. There is also an effect that can be cooled.

Further, according to the second configuration, when an abnormality occurs during fire extinguishing, the continuation of forced combustion after the signal of the combustion stoppage is promptly released, and the opening / closing body is moved to the open position,
Since the main body is cooled by operating the convection blower and the burner fan for a certain period of time, it is possible to provide a very efficient, safe and comfortable oil burner control device with little fire odor.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an oil combustor control device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the control device.

FIG. 3 is a sectional view showing an example of an oil combustor using the control device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device main body 2 Combustion part 3 Vaporization cylinder 4 Burner part 5 Fuel pump 6 Burner fan 7 Convection blower 8 Hot air outlet 9 Opening / closing body 10 Control device 11 Combustion control part 12 First timer part 13 Second timer part 14 Third Timer section 15 Abnormality detection section 16 Fourth timer section 20 Convection blower control section 21 Opening / closing body control section

Continuation of front page (72) Inventor Hiroshi Ishihara 1006 Kazuma Kadoma, Kazuma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-2-203157 (JP, A) JP-A-3-144255 (JP) JP-A-4-39518 (JP, A) JP-A-1-310264 (JP, A) JP-A-2-267461 (JP, A) JP-A 63-134251 (JP, U) JP-A 3-21648 (JP, U) Hira 5-83660 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24H 3/04 305 F23N 5/20 103

Claims (2)

(57) [Claims] 1. A combustion section for vaporizing and burning kerosene, a fuel pump for supplying fuel to the combustion section, a burner fan for supplying combustion air to the combustion section, and a combustion gas from the combustion section. A convection blower that blows out the room as a warm air from a warm air outlet of the device body, an opening / closing body provided at the warm air outlet, a first timer unit started simultaneously with a combustion stop signal, and a first timer unit Has a second timer section that is started at the same time as the time is up, and a third timer section that is started at the same time as the second timer section is up, and at least while the first timer section is running, the fuel pump and the burner A combustion control unit for continuing the operation of the fan, and at least the first timer unit is controlled so that the opening / closing body is closed while the second timer unit is running. Holds the body in the closed state, and further holds the angle between the close and open states while the third timer section is running, and holds the open / close body in the closed position when the third timer section counts up. Opening and closing body control unit, and at least while the first timer unit is running, applies a brake to the convection blower and rotates the convection blower at a predetermined rotation speed while the second and third timers are running, A control device for an oil combustor, comprising: a convection fan control unit that stops the convection fan when the third timer unit times out. 2. A combustion section for vaporizing and burning kerosene, a fuel pump for supplying fuel to the combustion section, a burner fan for supplying combustion air to the combustion section, and a combustion gas from the combustion section. A convection blower that blows out the room as a warm air from a warm air outlet of the device body, an opening / closing body provided at the warm air outlet, a first timer unit started simultaneously with a combustion stop signal, and a first timer unit Has a second timer section that is started at the same time as the time is up, and a third timer section that is started at the same time as the second timer section is up, and at least while the first timer section is running, the fuel pump and the burner A combustion control unit for continuing the operation of the fan, and controlling the opening and closing body to be in a closed state at least while the first timer unit is running, and the opening and closing body while the second timer unit is running. Is held in a closed state, and furthermore, while the third timer unit is running, it is held at a position between closed and open, and when the third timer unit counts up, the opening / closing body is held at the closed position. The opening / closing body control unit, at least while the first timer unit is running, applies a brake to the convection blower and rotates the convection blower at a predetermined rotation speed while the second and third timers are running, At the time when the third timer section has timed out, the convection blower has a convection blower control section for stopping the convection blower, and the combustion control section has an abnormality detection section for detecting an abnormality of the device, the first timer If an abnormality of the device is detected during startup, the fuel pump is stopped,
A fourth timer section provided in the combustion control section is activated, and while the fourth timer section is activated, the burner fan and the convection blower are activated at a predetermined rotation speed, and the opening / closing body is opened. Oil burner control device.