JP2529393B2 - Liquid fuel combustion device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vaporized liquid fuel combustion apparatus using petroleum as a fuel.

2. Description of the Related Art A conventional vaporization type liquid fuel combustion apparatus of this type is constructed as shown in FIG.

That is, the burner portion 3 is arranged in a heat insulating structure together with the vaporizer 2 in which the heater 1 is embedded. One end of the refueling pipe 4 was connected to a part of the carburetor 2, and the other end was connected to the refueling pump 5. The fuel pump 5 is connected to a fuel pump controller 6 that adjusts the heat output by changing the amount of liquid fuel to be supplied, and the carburetor 2 determines the carburetor temperature during steady combustion to the maximum combustion amount. During the standby of the vaporizer temperature controller 7 that sets the vaporization capacity of the vaporizer and the standby state of the vaporizer during non-combustion, the standby temperature that lowers the vaporizer temperature to a temperature below the temperature that maintains the vaporization capacity of the maximum combustion amount. Controller 8
It consisted of and.

When the heater 1 is energized and the carburetor 2 rises to the temperature set by the carburetor temperature controller 7, the fuel is supplied to the carburetor 2 by the refueling pump 5 through the refueling pipe 4 and becomes vaporized gas, and reaches the burner section 3. It is ignited by an igniter (not shown) to start combustion. During non-combustion standby, the standby temperature controller 8 lowers the carburetor temperature to a temperature below the combustion vaporization capacity limit.

However, in the above configuration, when starting combustion from the standby state, ignition cannot be performed because the vaporization capacity is insufficient until the vaporizer 2 rises to the set temperature by the vaporizer temperature controller 7. Had a problem.

The present invention solves such a conventional problem, and an object thereof is to be able to ignite immediately when starting combustion from a standby state.

Means for Solving the Problems In order to solve the above problems, a liquid fuel combustion apparatus of the present invention is a vaporizer that vaporizes liquid fuel by an electric heater, an oil supply pump that supplies liquid fuel to the vaporizer, and a vaporizer. Of the burner, which is connected to the outlet of the carburetor through an adiabatic passage, a combustion fan that supplies air to this burner and the carburetor, and air and liquid fuel that are supplied from this combustion fan and the fuel pump. Fuel air adjustment controller that adjusts the heat output by changing the amount, standby fuel air adjustment controller that sets the combustion amount at ignition lower than the maximum combustion amount, and carburetor temperature at the time of combustion the combustion amount at that time And a standby carburetor temperature controller that lowers the carburetor temperature to a temperature above the vaporization capacity limit during ignition during non-combustion standby. It is provided with.

Effect According to the present invention, when the operation is started from the standby state, the carburetor has already reached the set temperature by the standby carburetor temperature controller when the operation is started from the standby state. The amount set by the fuel air adjustment controller is supplied to the vaporizer, normal vaporization is performed and mixed gas is generated,
Combustion is started by the burner section. When combustion is started, the air and liquid fuel adjusted by the fuel-air adjustment controller are supplied from the combustion fan and the fuel supply means, and the carburetor temperature controller adjusts the carburetor temperature accordingly, and steady combustion is performed.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 of the accompanying drawings.

In FIG. 1, a plurality of vaporizers 13 provided on one burner base 12 and a mixing chamber 14 above the vaporizers.
Is provided, and a burner portion 11 including the mixing chamber 14 and a burner head 15 provided at an upper opening of the mixing chamber 14 is provided. Inside the vaporizer 13, a rotary atomizer 16 for liquid fuel is arranged, and a motor 18 for rotating the rotary atomizer 16 is passed through a blower box 17 formed in a lower portion of the burner base 12. It is fixed to the bottom of the case 19. A combustion fan 20 is arranged in a part of the blower box 17. The outside of the carburetor 13 is surrounded by a carburetor cover 21 and insulated, and an oil supply pipe 22 is seen near the rotary atomizer 16. The other end of the oil supply pipe 22 is connected to the oil supply pump 23. A fuel air adjustment controller 24 that adjusts the heat output by changing the amount of air and liquid fuel supplied from the oil supply pump 23 via the combustion fan 20 and the oil supply pipe 22,
A standby fuel air adjustment controller 25 that sets the combustion amount at ignition lower than the maximum combustion amount, and a carburetor temperature controller 26 that sets the carburetor temperature during combustion to a temperature above the vaporization capacity limit of the combustion amount at that time 26 And a standby carburetor temperature controller 27 that lowers the carburetor temperature to a temperature equal to or higher than the vaporization capacity limit at the time of ignition during non-combustion standby.

In the above structure, the rotary atomizer 16 is rotated by the rotation of the motor 18, and the liquid combustion is supplied to the rotary atomizer 16 through the oil supply pipe 22 by the operation of the oil supply pump 23. The liquid fuel supplied to the rotary atomizer 16 is atomized by the centrifugal force and collides with the vaporization surface of the inner wall of the vaporizer 13 to be vaporized. The vaporized fuel gas is conveyed to the mixing chamber 14 by a part of the combustion primary air supplied by the combustion fan 20, is mixed with the remaining combustion primary air, and is ejected from the burner head 15 to ignite means ( (Not shown) ignites and burns.

Here, when the operation is started from the standby state, since the carburetor 13 has already reached the set temperature by the standby carburetor temperature controller 27 due to the energization of the heater, the fuel is immediately fed from the fuel pump 23 to the standby fuel air adjustment control. The amount set by the device 25 is supplied to the carburetor 13, normal vaporization is performed and mixed gas is generated, and combustion air is also supplied from the combustion fan 20 to the standby fuel air adjustment controller.
The amount set by 25 is supplied, and the burner head 15 starts combustion. Fuel-air regulation controller when combustion starts
Air and liquid fuel conditioned by 24 combustion fan 20
And the carburetor temperature controller 26 adjusts the carburetor temperature accordingly, and steady combustion is performed, so that ignition can be performed immediately when combustion is started from the standby state. Furthermore, when the operation is started from the cold state, the carburetor temperature set by the standby carburetor temperature controller 27 is set lower than the carburetor temperature temperature set by the carburetor temperature controller 26. In addition, the waiting time required before the combustion can be started can be shortened.

FIG. 2 is a graph showing the relationship between the combustion amount and the carburetor temperature setting in the embodiment of the present invention, in which the horizontal axis represents time series and the vertical axis represents carburetor temperature and fuel supply amount. There is.

As described above, according to the liquid fuel combustion apparatus of the present invention, the vaporizer for vaporizing the liquid fuel by the electric heater, the fuel supply means for supplying the liquid fuel to the vaporizer, and the outlet of the vaporizer are provided. A burner section connected through an adiabatic passage, a combustion fan that supplies air to this burner section and a carburetor, and the amount of air and liquid fuel supplied from this combustion fan and fuel supply means are changed. The first control means for adjusting the heat output by means of the above, the second control means for setting the combustion amount at the time of ignition lower than the maximum combustion amount, and the carburetor temperature at the time of combustion is equal to or higher than the vaporization capacity limit of the combustion amount at that time. A first carburetor temperature control means for setting the temperature of the carburetor, and a second carburetor temperature control means for lowering the carburetor temperature to a temperature in the vicinity of the vaporization capacity limit at the time of ignition to a temperature in the vicinity during non-combustion standby. Since it is equipped with When the operation is started from the by-state, the combustion can be started immediately, which is very convenient and has a great effect that the running cost of electricity can be reduced.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of a liquid fuel combustion apparatus according to an embodiment of the present invention, FIG. 2 is a graph showing a relationship between a combustion amount and a carburetor temperature setting according to an embodiment of the present invention, and FIG. FIG. 3 is a vertical sectional view showing the liquid fuel combustion apparatus of FIG. 11 ... Burner section, 13 ... Vaporizer, 20 ... Combustion fan,
23 ... Refueling pump, 24 ... First A / F control means, 25 ... Second A / F control means, 26 ... First vaporizer temperature control means, 27 ...
... Second vaporizer temperature control means.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Tomita 1006 Kadoma, Kadoma-shi, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References: 157-104144 (JP, U)

Claims (1)

(57) [Claims] 1. A vaporizer for vaporizing a liquid fuel, an oil supply pump for feeding the liquid fuel to the vaporizer, a burner portion provided above the vaporizer, and air for the burner portion and the vaporizer. A combustion fan, a fuel-air adjustment controller that adjusts the amounts of air and liquid fuel supplied from the combustion fan and the fuel pump during steady combustion, and the temperature of the carburetor is maintained at a temperature of the rated combustion amount. A carburetor temperature controller, a standby carburetor temperature controller that maintains the temperature of the carburetor at the temperature of the vaporization capacity required for ignition during preheating of the carburetor when combustion is stopped, and re-combustion from the time when the combustion is stopped. And a standby fuel air adjustment controller that adjusts the amount of air and liquid fuel supplied from the refueling pump when starting the liquid fuel combustion apparatus.