JPH0345007Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an oil burner device, and particularly to an improvement of a multi-stage combustion type oil burner device in which the amount of combustion can be changed over a plurality of stages.

[Conventional technology]

Generally, in a pressure spray oil burner such as a gun type burner, if the pressure of fuel oil supplied to the burner nozzle is less than a predetermined value, ignition errors or extinguishing phenomena occur. Especially from low combustion to high combustion,
Alternatively, when switching from high combustion to low combustion, a pressure drop occurs and extinguishment is likely to occur, and when such an extinguishment phenomenon occurs, the unburned gas remaining in the combustion chamber must be removed and then reignited. The operation was extremely complicated.

[Problem that the invention attempts to solve]

The present invention has been made to solve the above-mentioned problems, and its purpose is to provide a multistage combustion oil burner device that does not cause a fire extinguishing phenomenon when switching the combustion amount.

[Means for solving problems]

The above purpose is to pump a pump from the fuel tank side onto the fuel supply pipe connecting the fuel tank and the burner nozzle.
In an oil burner device that is sequentially equipped with a heater, a main solenoid valve, and a shutoff solenoid valve, a branch pipe is provided that connects the suction side and the discharge side of the pump, and a pressure regulating valve is installed on the branch pipe. Further, a bypass pipe is provided straddling the main solenoid valve, and a pressure adjustment pot is attached on the bypass pipe, and at least one additional bypass pipe other than the bypass pipe is provided straddling the main solenoid valve, and the at least one This is achieved by a multi-stage combustion oil burner device, which is equipped with a pressure regulating cock and a solenoid valve on each of the additional bypass pipes.

[Effect]

With the above configuration, both the bypass pipe and the additional bypass pipe are branched on the burner nozzle side from the pump, and the combustion amount switching operation is performed by the main solenoid valve and the solenoid valve on the additional bypass pipe. The bypass pipe, which is equipped with only a pressure adjustment knob that ensures the combustion amount at low combustion, is always open, so even when changing the combustion amount, the pressure does not drop below the low combustion. No decline occurs;
The fire extinguishing phenomenon is effectively prevented.

〔Example〕

Hereinafter, the details of the present invention will be specifically explained with reference to the drawings.

The drawing is an explanatory view showing an embodiment of a multi-stage combustion oil burner device according to the present invention.

In the figure, 1 is the burner nozzle, 2 is the fuel tank, and 3
is a fuel supply pipe connecting the burner nozzle 1 and the fuel tank 2, 4 is a pump, 5 is a branch pipe provided across the pump 4, 6 is a pressure regulating valve, 7 is a heater, 8 is a main solenoid valve, 9 is a bypass pipe provided across the main electromagnetic valve 8, 10 is a pressure adjustment cock,
11 is a shutoff solenoid valve, 12 is an additional bypass pipe provided across the main solenoid valve 8, 13 is a pressure adjustment cock, and 14 is a solenoid valve.

In the above device, during low-stage combustion, the main solenoid valve 8 and the solenoid valve 14 are closed, and the fuel oil supplied from the fuel tank is pressurized by the pump 4 and brought to a predetermined viscosity by the heater 7. After the heating is adjusted to
0, and is further supplied to the burner nozzle 1 via the shutoff solenoid valve 11.

Also, during intermediate stage combustion, the main solenoid valve 8 remains closed, but the solenoid valve 14 on the additional bypass pipe 12 is opened, and the fuel sent from the fuel tank 1 via the pump 4 and heater 7 Oil is supplied to the burner nozzle 1 through a bypass pipe 9 and an additional bypass pipe 12. Therefore, the amount of fuel oil supplied to the burner nozzle 1 is increased compared to the case of the low-stage combustion.

Furthermore, during high-stage combustion, the main solenoid valve 8 is also opened, and the fuel oil flows not only through the bypass pipe 9 and the additional bypass pipe 12 but also through the main solenoid valve 8, which reduces the amount of fuel oil supplied to the burner nozzle 1. increases even more than in the case of the intermediate stage combustion.

Therefore, in any of the above-mentioned low stage, middle stage, and high stage, the fuel oil is always pressurized by the pump 4 and then divided into the bypass pipe 9 and supplied to the burner nozzle 1. Even when switching the combustion amount by opening and closing the valves 8 and 14, the fuel pressure does not drop below the allowable value, and no fire extinguishing phenomenon occurs.

That is, a bypass pipe 9 is provided across the main electromagnetic valve 8, and a pressure adjustment cock 10 is installed on this bypass pipe 9.
In addition to installing the other additional bypass pipe 1
2 is equipped with both a pressure adjustment knob 13 and a solenoid valve 14, and the combustion amount can be changed using the additional bypass pipe 1.
Since this is done by opening and closing the solenoid valve 14 on the upper part 2 and the main solenoid valve 8, there is no solenoid valve that shuts off the bypass pipe 9, and fuel oil corresponding to the low combustion state is always supplied through the bypass pipe 9. Therefore, even when switching the combustion amount, the fuel pressure does not drop below the pressure at low combustion, and the fire extinguishing phenomenon is prevented.

Therefore, the combustion amount can be changed without requiring the complicated operations of removing unburned gas and reigniting as described above.

In addition, in the present invention, a branch pipe 5 is provided that connects the suction side and the discharge side of the pump 4, and a pressure regulating valve 6 is installed on the branch pipe 5. By adjusting the amount of fuel oil flowing back to the side using the pressure regulating valve 6, the pressure can be continuously adjusted using the pressure regulating valve 6 without changing the output of the pump 4 itself step by step. Therefore, the fire extinguishing phenomenon can be avoided.

In addition, in the above embodiment, the additional bypass pipe 1
2 was installed, and the combustion amount was changed over in three stages. However, multiple additional bypass pipes were added, and a pressure adjustment pot and a solenoid valve were attached to each of them, and the switching of the solenoid valves was performed. It is also possible to freely switch between three or more stages depending on the combination of opening and closing.

[Effect of idea]

Since the present invention is constructed as described above, it is possible to provide a multistage combustion oil burner device that does not cause a fire extinguishing phenomenon when switching the combustion amount.

[Brief explanation of drawings]

The drawing is an explanatory view showing an embodiment of a multi-stage combustion oil burner device according to the present invention. 1... burner nozzle, 2... fuel tank, 3...
...Fuel supply pipe, 4...Pump, 5...Branch pipe, 6
...Pressure adjustment valve, 7 ... Heater, 8 ... Main solenoid valve, 9 ... Bypass pipe, 10 ... Pressure adjustment pot, 11 ... Shutoff solenoid valve, 12 ... Additional bypass pipe, 13 ... Pressure Adjustment knob, 14...Solenoid valve.

Claims (1)

[Scope of utility model registration request] In an oil burner device, a pump, a heater, a main solenoid valve, and a shutoff solenoid valve are sequentially installed from the fuel tank side on the fuel supply pipe connecting the fuel tank and the burner nozzle, and the suction side and discharge side of the pump are connected. A pressure regulating valve is installed on the branch pipe, a bypass pipe is provided across the main solenoid valve, a pressure regulating valve is installed on the bypass pipe, and a pressure regulating valve is installed on the main solenoid valve. A multi-stage combustion oil burner device comprising: at least one additional bypass pipe other than the above-mentioned bypass pipe; and a pressure adjustment cock and a solenoid valve attached to each of the at least one additional bypass pipe.