JPH10185183A - Emulsion apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent poor combustion as caused by changes in the quantity of combustion depending on the presence of added water in an emulsion apparatus in which a fuel oil and water are mixed and emulsified to burn. SOLUTION: There are arranged a fuel tank 1 for storing a fuel oil, a burner 8 for combustion, a fuel supply piping 2 linking the fuel tank 1 and the burner 8, an oil pump 9 and an emulsion mixer part 3 in the course of the fuel supply piping 2 and a water supply piping 4 for supplying water to the emulsion mixer part 3. The fuel oil sent from the fuel tank 1 and water sent from the water supply piping 4 are mixed and emulsified and the emulsified fuel oil thus obtained is guided to the burner 8 to burn. In the emulsion apparatus thus obtained, fuel oil supply curtailing means 10 and 11 are provided to temporarily curtail the supply of the fuel oil to be sent to the burner 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emulsion apparatus for mixing and emulsifying fuel oil and water and burning the emulsified fuel oil.

[0002]

2. Description of the Related Art It has been widely practiced to mix and emulsify fuel oil and water and burn the emulsified fuel oil. In this case, if the emulsified fuel oil is left undisturbed due to combustion stoppage or the like, the emulsified fuel oil is separated into water and oil, and non-ignition and vibration combustion occur at the start of the next combustion. At the start of combustion, only the fuel oil is guided to the burner to start combustion as described in (1). When only fuel oil was burned without adding water, the actual amount of combustion increased compared to when water was added, but the amount of air supplied to the burner was constant, so the amount of air was relatively low. It was lost, resulting in poor combustion such as vibration combustion and generation of black smoke.

[0003]

SUMMARY OF THE INVENTION The problem to be solved by the present invention arises in an emulsion apparatus in which fuel oil and water are mixed and emulsified and burned, due to fluctuations in the amount of combustion depending on whether or not water is added. The purpose is to prevent poor combustion.

[0004]

A fuel tank for storing fuel oil, a burner for combustion, a fuel supply pipe connecting the fuel tank and the burner, an oil pump, an emulsion mixer section, and an emulsion mixer section in the middle of the fuel supply pipe. An emulsion in which water supply pipes for supplying water are provided, and the fuel oil sent from the fuel tank and water sent from the water supply pipe are mixed and emulsified, and the obtained emulsified fuel oil is guided to a burner and burned. A fuel oil that temporarily reduces the amount of fuel oil supplied to the burner in an emulsion device that improves the ignitability by stopping water supply at the time of ignition and supplying only fuel oil to the burner. Supply amount reduction means is provided.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a flow in one embodiment of the present invention. A fuel tank 1 for storing fuel oil; a fuel supply pipe 2 connected to a lower part of the fuel tank 1 for supplying fuel to a burner 8;
And an oil pump 9 are provided. Emulsion mixer part 3
Is connected to a water supply pipe 4, and a water pump 5, a water supply solenoid valve 6, and a check valve 7 are provided in the middle of the water supply pipe 4. A fuel oil return pipe 10 for connecting the front and rear of an oil pump 9 of the fuel supply pipe 2 is provided, and a fuel oil return solenoid valve 11 and an orifice 12 are provided in the middle of the fuel oil return pipe 10. The solenoid valve 11 forms a fuel oil supply amount reducing unit. The oil pump 9, the water pump 5, the water supply solenoid valve 6, and the fuel oil return solenoid valve 11 are connected to a control device 13, which controls the operation of each.

FIG. 2 shows a time chart when the combustion shown in FIG. 1 is performed. When a combustion start signal is input to the control device 13, the control device 13 starts operating the oil pump 9 and opens the fuel oil return electromagnetic valve 11. At this time, the water pump 5 is stopped, the water supply solenoid valve 6 is closed, and no water is supplied to the emulsion mixer section 3, so that only the fuel oil from the fuel tank 1 is sent to the oil pump 9. By operating the oil pump 9, the fuel oil is pressurized,
The pressurized fuel oil is sent to the burner 8 and is injected from the nozzle 14 and burned. At this time, by opening the fuel oil return solenoid valve 11, some fuel oil is supplied to the fuel oil return pipe 10.
Is returned to the upstream side of the oil pump 9, the amount of fuel oil sent to the burner 8 is reduced, and the discharge amount from the nozzle 14 is reduced. The amount of fuel oil reduction at this time is determined by the orifice 12.

Since only fuel oil is sent to the burner 8, no ignition or oscillating combustion occurs at the time of ignition, and the amount of fuel oil supplied is reduced when water is not added. As a result, there is no relative decrease in the amount of air, and the occurrence of poor combustion can be prevented.

After a certain period of time has passed since the ignition and the combustion is stabilized, the control device 13 starts the operation of the water pump 5, opens the water supply solenoid valve 6, and closes the fuel oil return solenoid valve 11. By operating the water pump 5 and opening the water supply solenoid valve 6, water is sent to the emulsion mixer section 3, and the fuel oil and water are mixed and emulsified in the emulsion mixer section 3 to become emulsified fuel oil. The emulsified fuel oil is sent to the oil pump 9,
Pressurized by the oil pump 9 and sent to the burner 8,
Since the fuel oil return electromagnetic valve 11 is closed, the amount of emulsified fuel oil is not reduced, the discharge amount from the nozzle 14 increases, and normal emulsion combustion is performed.

When a combustion stop signal is input to the control device 13, the control device 13 first opens the fuel oil return solenoid valve 11, closes the water supply solenoid valve 6, and stops the operation of the water pump 5. In this case, since only the fuel oil from the fuel tank 1 is sent to the burner 8, the emulsified fuel oil in the fuel supply pipe 2 from the emulsion mixer section 3 to the nozzle 14 is replaced with the fuel oil. At this time, the fuel oil return solenoid valve 1
1, the discharge amount from the nozzle 14 is small, and the fuel oil supply amount is reduced, so that there is no fluctuation in the combustion amount, the air ratio does not decrease, and the occurrence of poor combustion is prevented. You. After that, the control device 13 stops the oil pump 9 to stop the combustion.

The oil pump 9 and the fuel oil return pipe 1
0, a similar effect can be obtained by using a relief valve built-in type oil pump instead of providing the fuel oil return electromagnetic valve 11.

FIG. 3 shows a flow in another embodiment of the present invention. The same reference numerals as in FIG. 1 denote the same components as those in FIG. FIG. 3 does not include the fuel oil return pipe 10, the fuel oil return solenoid valve 11, and the orifice 12, which are provided in the case of FIG. 1, and the oil pump 9 is provided with an inverter device 15 instead.
The oil pump 9 is connected to the oil pump 9 through 5 and is provided with the inverter device 15 to serve as a fuel oil supply amount reducing unit.

FIG. 4 shows a time chart when the combustion in FIG. 2 is performed. When a combustion start signal is input to the control device 13, the control device 13 starts operating the oil pump 9 through the inverter device 15, but the frequency is reduced by the inverter device 15. At this time, the water pump 5 is stopped, the water supply solenoid valve 6 is closed, and no water is supplied to the emulsion mixer section 3, so that only the fuel oil from the fuel tank 1 is sent to the oil pump 9. . The oil pump 9 pressurizes the fuel oil, and the pressurized fuel oil is sent to the burner 8 and is injected from the nozzle 14 and burned. However, since the frequency is reduced by the inverter device 15, the discharge amount of the oil pump 9 is reduced as compared with the normal time, and the discharge amount from the nozzle 14 is reduced. The amount of fuel oil reduction at this time is determined by the set frequency of the inverter device 15.

Since only fuel oil is sent to the burner 8, no ignition or oscillating combustion occurs at the time of ignition, and the amount of fuel oil supplied is reduced when water is not added. As a result, there is no relative decrease in the amount of air, and the occurrence of poor combustion can be prevented.

After a certain period of time has passed since the ignition and the combustion becomes stable, the control device 13 starts the operation of the water pump 5, opens the water supply solenoid valve 6, and releases the frequency reduction by the inverter device 15. The water pump 5 is operated, and the water supply solenoid valve 6 is operated.
Is opened, water is sent to the emulsion mixer section 3, and the fuel oil and water are mixed and emulsified in the emulsion mixer section 3 to become emulsified fuel oil. The emulsified fuel oil is sent to an oil pump 9, pressurized by the oil pump 9,
To the inverter device 15
, The amount of emulsified fuel oil sent to the burner 8 increases, the amount of discharge from the nozzle 14 increases, and normal emulsion combustion is performed.

When a combustion stop signal is input to the control device 13, the frequency is reduced by the inverter device 15, the water supply solenoid valve 6 is closed, and the operation of the water pump 5 is stopped. In this case, since only the fuel oil from the fuel tank 1 is sent to the burner 8, the emulsified fuel oil in the fuel supply pipe 2 from the emulsion mixer section 3 to the nozzle 14 is replaced with the fuel oil. At this time, since the frequency is reduced by the inverter device 15, the discharge amount from the nozzle 14 is reduced, and the combustion oil supply amount is reduced, so that the combustion amount does not fluctuate and the air ratio decreases. Therefore, occurrence of poor combustion is prevented. After that, the control device 13 stops the oil pump 9 to stop the combustion.

[0016]

By implementing the present invention, it is possible to prevent fluctuations in the amount of combustion due to the presence or absence of water while preventing non-ignition and oscillating combustion at the time of ignition, thereby preventing poor combustion.

[Brief description of the drawings]

FIG. 1 is a flowchart of an embodiment of the present invention.

FIG. 2 is a time chart of one embodiment of the present invention.

FIG. 3 is a flowchart of another embodiment of the present invention.

FIG. 4 is a time chart of another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fuel tank 2 Fuel supply pipe 3 Emulsion mixer part 4 Water supply pipe 5 Water pump 6 Water supply solenoid valve 7 Check valve 8 Burner 9 Oil pump 10 Fuel oil return pipe 11 Fuel oil return solenoid valve 12 Orifice 13 Control device 14 Nozzle 15 Inverter device

Claims (3)

[Claims] 1. A fuel tank for storing fuel oil, a burner for combustion, a fuel supply pipe connecting the fuel tank and the burner,
An oil pump, an emulsion mixer section, and a water supply pipe for supplying water to the emulsion mixer section are provided in the middle of the fuel supply pipe, and the fuel oil sent from the fuel tank and the water sent from the water supply pipe are mixed and emulsified. An emulsion device in which the obtained emulsified fuel oil is guided to a burner and burned, and at the time of ignition, the supply of water is stopped,
An emulsion apparatus in which ignitability is improved by supplying only fuel oil to a burner, wherein a fuel oil supply amount reducing means for temporarily reducing the supply amount of fuel oil sent to the burner is provided. apparatus. 2. The emulsion apparatus according to claim 1, further comprising a fuel oil return pipe connecting a downstream side and an upstream side of an oil pump of the fuel supply pipe, and controlling a flow of the fuel oil in the middle of the fuel oil return pipe. An emulsion apparatus characterized in that a fuel oil return control valve is provided, and a fuel oil supply amount reducing means is formed by a fuel oil return pipe and a fuel oil return control valve. 3. The emulsion apparatus according to claim 1, further comprising a discharge amount reducing device for reducing the discharge amount of the oil pump, wherein the oil pump discharge amount reducing device is used as fuel oil supply amount reducing means. Characterized emulsion device.