JP2783005B2 - Oil burning equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-fired oil combustion apparatus.

[0002]

2. Description of the Related Art As shown in FIGS. 5 and 6, a conventional oil-fired apparatus of this type includes a vaporizer 2 having a U-shaped heater 1 built therein and a main vaporizer chamber 4 divided by a partition wall 3 and a sub-vaporizer 4. It is formed by a vaporization chamber 5. The main vaporizing chamber 4 and the sub-vaporizing chamber 5 are provided with a vaporized air inlet 6 and an oil feed nozzle 7, respectively.
Heat receiving fins 8 are provided on the outer wall of the vaporizer 2. The flame hole 9 and the secondary air port 10 face the heat receiving fin 8 of the main vaporization chamber 4.
The main burner head 11 formed by the above is provided. Similarly, the sub-burner head 12 is provided to face the heat receiving portion 8 of the sub-evaporation chamber 5. Here, an air chamber 13 communicating with a combustion fan (not shown) is provided so as to include the carburetor 2 and the main burner head 11 and the sub-burner head 12, and an ignition electrode 14 is provided near the downstream of the main burner head 11. Is provided. Further, the vaporizer thermistor 15 is provided on the upper outer wall of the main vaporization chamber 4.

Next, the preheating operation in the above configuration will be described. The first energized heater 1 causes the vaporizer 2
Is preheated. This preheat makes the thermistor vaporizer 1
When the output of 5 reaches a set value, the heater 1 is turned on and off at the output, and the temperature of the vaporizer 2 is controlled so as to become the vaporization temperature.

Next, the combustion operation will be described. The air sent from the combustion fan is divided into two systems, i.e., vaporized air flowing into the vaporizer 2 from the vaporized air inlet 6 and secondary air ejected from the secondary air port 10. On the other hand, the kerosene spouted from the oil feed nozzle 7 collides with the main vaporization chamber 4 and the sub-vaporization chamber 5 and is instantaneously vaporized. The vaporized gas generated here is mixed with the previous vaporized air to become a premixed gas, and is ejected from the flame hole 9.
The combustion is started by being ignited by the discharge of the ignition electrode 14, and the combustion is further promoted by the secondary air. Then, when the combustion heat received by the heat receiving fins 8 is conducted to the vaporizer 2,
The output of the vaporizer thermistor 15 approaches the set value, and at the same time, the heater 1 is turned on and off so that the temperature of the vaporizer 2 is controlled to the vaporization temperature.

[0005]

However, in the configuration of the above-described conventional petroleum combustion apparatus, when the supply of kerosene to the sub-vaporization chamber 5 is stopped in accordance with the required amount of combustion, the heat receiving fins 8 of the sub-vaporization chamber 5 are stopped. Is cooled by the vaporized air ejected from the flame hole 9 of the sub-burner head 12 and the secondary air ejected from the secondary air port 10, so that the vaporizing latent heat of kerosene is not deprived, as shown in FIG. In addition, the temperature of the sub-vaporization chamber 5 becomes lower than the temperature of the main vaporization chamber 4. Therefore, there is a problem that the vaporizer 2 cannot be maintained at a temperature higher than the vaporization temperature unless the heater capacity is increased by the heat dissipation loss due to the heat conduction from the main vaporization chamber 4 to the sub-vaporization chamber 5. That is, when the heater capacity is large, the usage limit of the capacity (15 A) of the home power supply may be exceeded.

When the supply of kerosene to the sub-vaporization chamber 5 is started again, the heat of combustion received by the heat receiving fins 8 is transferred to the vaporizer 2.
Until heat is transferred to the sub-evaporation chamber 5, the temperature of the sub-evaporation chamber 5 is further reduced to a temperature equal to or lower than the vaporization temperature.

The present invention has been made to solve the above problems, and has as its object to reduce the heater capacity and prevent poor vaporization.

[0008]

Means for Solving the Problems The present invention for achieving the above object, a vaporizer incorporating a Heater, vaporizing fuel
And a partition for dividing the vaporizer, and a main vaporization chamber provided in one of the divided vaporizers and always supplied with fuel during combustion, and provided in the other of the divided vaporizers in accordance with a required combustion amount. The sub-evaporation chamber where the fuel is supplied and stopped, and the fuel
During combustion, always supply combustion air to the main and sub-evaporation chambers.
And a combustion fan provided so as to face the main vaporization chamber.
Installed so as to face the main burner head and the sub-evaporation chamber.
A sub-burner head, and the vaporization so as to absorb heat of combustion.
And a heat receiving fin provided on an outer wall of the vessel.
Is arranged so that it is concentrated on the main vaporization chamber side.
You.

[0009]

According to the present invention, when the supply of kerosene to the sub-vaporization chamber is stopped, the heat receiving fins on the side of the sub-vaporization chamber are cooled by the vaporized air and secondary air ejected from the sub-burner head. Since the number of heat receiving fins on the sub-vaporization chamber side is smaller than that on the main vaporization chamber side, the temperature of the sub-vaporization chamber is slightly lower than the temperature of the main vaporization chamber. Therefore, the temperature of the vaporizer can be maintained at a temperature equal to or higher than the vaporization temperature even if the heater capacity is suppressed, because the heat radiation loss due to the heat conduction to the sub-vaporization chamber is reduced.

Further, even when the supply of kerosene to the sub-vaporization chamber is restarted, the temperature of the sub-vaporization chamber is maintained at a temperature equal to or higher than the vaporization temperature until the heat of combustion received by the heat receiving fins is conducted to the vaporizer. Therefore, poor vaporization does not occur in the sub-vaporization chamber.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1 to FIG. 4, reference numeral 16 denotes a bottomed box-shaped mixing chamber divided into two chambers, and a main burner head 19 formed by a flame hole 17 and a secondary air port 18 on the upper surface of each chamber. And a sub-burner head 20, and a vaporizer 22 having a U-shaped heater 21 built therein is provided upstream of the mixing chamber 16 in contact with the main burner head 19 and the sub-burner head 20. The carburetor 22 divided by the partition 23 dividing the inside is provided with a main vaporization chamber 24 which is always supplied with fuel at the time of combustion and communicates with the main burner head 19, and the other divided according to the required combustion amount. A sub-vaporization chamber 25 is provided for supplying and stopping fuel and communicating with the sub-burner head 20. A vaporized air inlet 27 is provided in the vaporizer lid 26 so as to face the main vaporizing chamber 24 and the sub-vaporizing chamber 25, and an oil feed nozzle 28 faces the vaporized air inlet 27. Heat receiving fins 29 are arranged on the outer wall of the vaporizer 22 so as to be located above the main burner head 19 and the sub burner head 20 and to be concentrated on the main vaporization chamber 24 side. Further, a combustion fan 31 communicating with the air chamber 30 that contains the carburetor 22, the main burner head 19, and the sub-burner head 20 and supplies air is provided. Reference numeral 32 denotes an ignition electrode provided near the downstream of the main burner head 19, and reference numeral 33 denotes a vaporizer thermistor provided on an upper outer wall of the main vaporization chamber 24.

Next, the preheating operation in the above configuration will be described. The vaporizer 22 is preheated by the heater 21 that is first energized. When the output of the vaporizer thermistor 33 rises to a set value due to this preheating, the heater 21 is turned on and off at the boundary of this output so that the temperature of the vaporizer 22 is controlled to the vaporization temperature.

Next, the combustion operation will be described. 2 of the vaporized air supplied from the combustion fan 31 to the main vaporization chamber 24 and the sub-vaporization chamber 25 from the vaporized air inlet 27 via the air chamber 30 and the secondary air supplied to the main burner head 19 and the sub-burner head 20 It is divided into systems and supplied. On the other hand, the kerosene spouted from the oil supply nozzle 28 is instantaneously vaporized in the main vaporization chamber 24 and the sub-vaporization chamber 25. Then, the generated vaporized gas is mixed with the vaporized air in the mixing chamber 16 to form the main burner head 1.
9 and the sub-burner head 20 are ignited by the ignition electrode 32 and burn together with the secondary air, so that the combustion characteristics are good.

When the heat of combustion received by the heat receiving fins 29 is conducted to the vaporizer 22, the output of the vaporizer thermistor 33 approaches the set value, and the heater 21 turns on and off at that time, and the temperature of the vaporizer 22 becomes the vaporization temperature. It is controlled to become. Since the heat of combustion is recovered by the heat receiving fins 29, the frequency of use of the heater 21 is reduced, and the cost of electricity can be reduced.

Next, the temperature distribution of the vaporizer 22 will be described in detail. When fuel is supplied to the main vaporization chamber 24 and the sub-vaporization chamber 25, the main vaporization chamber 24 receives a large amount of combustion heat because the heat receiving fins 29 are concentrated in the main vaporization chamber 24. The sub-vaporization chamber 25 receives a smaller amount of combustion heat than the main vaporization chamber 24. As a result, as shown in FIG. 4, a temperature difference occurs between the main vaporization chamber 24 and the sub-vaporization chamber 25, but the temperature of the sub-vaporization chamber 25 is a temperature slightly lower than the temperature of the main vaporization chamber 24. Main vaporization chamber 2
Both 4 and the sub-vaporization chamber 25 can be vaporized instantaneously.

On the other hand, when the supply of kerosene to the sub-vaporization chamber 25 is stopped, the heat receiving fins 29 on the side of the sub-vaporization chamber 25 are cooled by the vaporized air and the secondary air ejected from the sub-burner head 20, but the sub-vaporization is performed. Since the number of the heat receiving fins 29 on the chamber 25 side is smaller than the number of the heat receiving fins 29 on the main vaporization chamber 24 side, the temperature of the sub-vaporization chamber 25 is slightly lower than the temperature of the main vaporization chamber 24. Therefore, the temperature of the vaporizer 22 can be maintained at a temperature equal to or higher than the vaporization temperature even when the heater capacity is suppressed, because the heat radiation loss due to the heat conduction to the sub-vaporization chamber 25 is reduced.

When the supply of kerosene to the sub-vaporization chamber 25 is restarted, the temperature of the sub-vaporization chamber 25 further decreases until the heat of combustion received by the heat receiving fins 29 is conducted to the vaporizer 22. However, since the temperature of the sub-vaporization chamber 25 can be maintained at a temperature equal to or higher than the vaporization temperature because the temperature of the sub-vaporization chamber 25 is higher than that of the conventional example, both the main vaporization chamber 24 and the sub-vaporization chamber 25 are instantaneously vaporized. it can.

[0019]

As described above, according to the petroleum combustion apparatus of the present invention, the heat receiving fins are concentrated on the main vaporization chamber side and arranged in the vaporizer. Therefore, when the supply of kerosene to the sub-vaporization chamber is stopped, Since the heat dissipation loss due to heat conduction from the vaporization chamber to the sub-vaporization chamber is reduced, the temperature of the vaporizer can be maintained at the vaporization temperature or higher even if the heater capacity is suppressed.

When the supply of kerosene to the sub-vaporization chamber is restarted after the combustion is stopped, the temperature of the sub-vaporization chamber further decreases until the heat of combustion received by the heat receiving fins is conducted to the vaporizer. However, since the temperature of the sub-vaporization chamber is higher than the conventional example, the temperature of the sub-vaporization chamber can be maintained at the vaporization temperature or higher.
Poor vaporization can be prevented from occurring in the sub-vaporization chamber.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an oil combustion device according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of the oil-fired apparatus.

FIG. 3 is a partially cutaway perspective view of the oil combustion device.

FIG. 4 is a diagram showing a temperature change in a vaporization chamber of the oil-fired apparatus.

FIG. 5 is a cross-sectional plan view of a conventional oil combustion device.

FIG. 6 is an external perspective view of the petroleum combustion apparatus with a partially cutaway view.

FIG. 7 is a temperature change diagram of a vaporization chamber of the oil-fired apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 19 Main burner head 20 Sub-burner head 21 Heater 22 Vaporization chamber 23 Partition wall 24 Main vaporization chamber 25 Sub-vaporization chamber 27 Vaporized air inlet 28 Oil feed nozzle 29 Heat receiving fin

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) F23D 11/44 F23D 11/10

Claims (1)

(57) [Claims] 1. A vaporizer having a built-in heater for vaporizing fuel, a partition for dividing the vaporizer, a main vaporization chamber provided in one of the divided vaporizers and always supplied with fuel during combustion, and a divided vaporizer. and auxiliary vaporizing chamber the supply of fuel, the stop is performed according to the combustion amount required is provided on the other by vaporizer, fuel
During combustion, always supply combustion air to the main and sub-evaporation chambers.
That the combustion fan and said main vaporization chamber main burner head and the provided so as to face the provided so as to face the auxiliary vaporizing chamber and the auxiliary burner head, as the vaporizing to absorb combustion heat
And a heat receiving fin provided on an outer wall of the vessel.
Is an oil-fired unit arranged so as to concentrate on the main vaporization chamber side .