JPH03260505A - Petroleum combustion device - Google Patents

Abstract

PURPOSE:To provide a petroleum combustion device for preventing a thermal deterioration of a carburettor, shortening a time required for heating petroleum up to its set temperature and further reducing a loss of thermal radiation by a method wherein an outer wall surface of a gasification chamber is provided with the carburettor formed by some heat receiving fins arranged on a burner head. CONSTITUTION:A combustion flame ignited at a burner head 16 passes between heat receiving fins 12 and ascends along the outer wall of a gasification chamber 11, so that the heat receiving area of a carburettor 9 is increased and the gasification chamber can receive combustion heat sufficiently. With such an arrangement, it is possible to lower the setting temperature of heat receiving fins and to prevent a thermal deterioration at the carburettor. In addition, since the received heat is immediately transmitted to the inner wall of the gasification chamber, even if a thermal capacity of the carburettor is low, it is possible to restrict a reduction in temperature at the gasification chamber. With such an arrangement, it is possible to shorten a time required for heating the carburettor to its set temperature. In turn, the gasification chamber may act to radiate heat when the combustion is waited at the set temperature of the carburettor. However, since the heat receiving fins are arranged at a lower part of the outer wall of the gasification chamber, a natural convection flow is restricted to reduce the thermal radiation and thus it is possible to reduce a thermal radiation loss from the gasification chamber.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an improvement in a vaporizer for a petroleum vaporization combustion apparatus.

2. Description of the Related Art Conventionally, in this type of device, as shown in FIG. has been done. Heat receiving H!
Reference numeral 15 has a ring shape, and is connected to the vaporizing chamber 3 in a heat transfer manner to surround the uniform chamber 4 and the laminated flame hole 6 connected to the uniform chamber 4. The vaporizing sinner lower opens tangentially on the circumferential surface of the vaporizing chamber 3 and passes through the air outlet of a combustion fan (not shown). The oil supply nozzle 8 faces the vaporized criminal lower and communicates with an oil pump (not shown).

In the above configuration, the energized heater 2 causes the vaporizer 1 to
and the laminated flame hole 6 are heated and maintained at a high temperature. Then, the air sent from the combustion fan flows into the vaporization chamber 3 from the vaporization sinner lower to form a swirling flow.Next, the kerosene sent from the oil pump flows from the oil supply nozzle 8 to the inner peripheral surface of the vaporization chamber 3. The generated vaporized gas mixes with the previous air to form a premixture, which is homogenized in the uniformity chamber 4 and then passed through the laminated flame hole 6.
It is ejected from. This premixture is distributed between the laminated flame hole 6 and the heat receiving wall 5.
The ignition electrode (not shown) is ignited in the gap between the heat receiving wall 5 and the ignition electrode (not shown) to start combustion, and the combustion is promoted by the air flowing in from the outside of the heat receiving wall 5.

Problems to be Solved by the Invention In such a conventional oil vaporization type combustion device, the heat transfer coefficient between the flame and the heat receiving wall 5 is lower than the heat transfer coefficient between the kerosene and the vaporization chamber 3 necessary for vaporizing the kerosene. Since the heat receiving wall 5 is small, the amount of heat received is controlled by the heat transfer coefficient between the flame and the heat receiving wall 5. Therefore, by directly colliding the flame with the heat-receiving wall 5, the flame and the heat-receiving wall 5 are
The idea was to improve the heat transfer coefficient between the two and obtain a large amount of heat received.

Therefore, there was a problem in that the heat receiving wall 5 became high in temperature and the vaporizer 1 deteriorated due to heat. Further, after ignition, until the received heat is transferred to the vaporization chamber 3, the temperature drop in the vaporization chamber 3 is suppressed by the amount of heat held by the vaporizer 1, which has a large heat capacity. As a result, it took time to heat the vaporizer 1 to the set temperature. On the other hand, during combustion standby with the vaporizer l maintained at the set temperature, the heat receiving wall 5 acts on heat radiation,
In particular, since the heat receiving W5 is a vertical surface, there is a large heat radiation loss due to natural convection, and this heat radiation detection is supplemented by the heater 2, which increases the power consumption and raises the electricity bill.

The present invention solves the above problems, and aims to provide an oil combustion device that prevents thermal deterioration of a vaporizer, shortens the time required to heat the vaporizer to a set temperature, and reduces heat radiation loss. The purpose is

Means for Solving the Problems In order to achieve the above object, the present invention includes a mixing chamber, a vaporizing chamber that passes through the upper part of the mixing chamber, a vaporizing chamber with a built-in heater, and an outer wall of the vaporizing chamber that faces above the burner head. a vaporizer formed from heat receiving fins provided therein; a premixture outlet opening at the bottom of the mixing chamber; a uniform chamber communicating with the premixture outlet; and the burner head provided at the top opening of the uniformity chamber. ,
It is equipped with a carburetor inlet that opens on the side surface of the vaporizer, and an oil feed nozzle that faces the carburetor inlet and is disposed toward the vaporization chamber.

Function: Due to the tank bottom of the present invention, the combustion flame burned in the burner head passes between the heat-receiving fins and rises along the outer wall of the vaporization chamber, so the heat-receiving area of the vaporizer becomes large and the vaporization chamber absorbs the combustion heat. can receive sufficient heat. This results in
By lowering the set temperature of the heat receiving fins, it is possible to prevent thermal deterioration of the vaporizer. Further, since the received heat is immediately transferred to the inner wall of the vaporization chamber, a drop in temperature of the vaporization chamber can be suppressed even if the heat capacity of the vaporizer is small.

Thereby, the time required to heat the vaporizer to the set temperature can be shortened. On the other hand, during combustion standby when the vaporizer is maintained at the set temperature, the vaporization chamber acts on heat radiation, but since the heat receiving fins are provided at the bottom of the outer wall of the vaporization chamber, natural convection is suppressed and heat radiation is reduced. The heat dissipation loss can be reduced.

Embodiment Hereinafter, an embodiment of the present invention will be explained with reference to FIGS. 1 to 3. In FIG. ing. The vaporization chamber 11 has a built-in heater 13 and is connected to the upper part of the mixing mold 0, and the mixing chamber 1 is located at the lower part of the outer wall surface.
A plurality of rectangular heat receiving fins 12 are arranged in a direction perpendicular to 0 and facing above the burner head 16.

Reference numeral 14 denotes a premixture outlet, which is opened at the bottom of the mixing chamber 10. Reference numeral 15 denotes a box-shaped uniform chamber, which communicates with the premixture outlet 14 and has a burner head 16 provided at its upper opening.

Reference numeral 17 denotes a vaporizer inlet, which is opened to 118 forming the mixing chamber 10 at the side of the vaporization chamber 11. 19 is the oil supply nozzle, facing the carburetor population 17. 20 is a combustion fan,
Air is supplied to the vaporizer 9 and the burner head 16 via the air chamber 21. A heat insulating material 22 is provided to cover the upper surface of the vaporization chamber 11.

In the above configuration, the operation will be explained. When the heater 13 is energized, the temperature of the vaporizer 9 rapidly rises and reaches the set temperature in a short time. Thereafter, the amount of heat generated by the heater 13 is reduced to maintain the set temperature. Air supplied from the combustion fan 20 is divided into two systems: vaporized air supplied from the carburetor port 17 to the carburetor 9, and secondary air supplied to the burner head 16.

On the other hand, kerosene is ejected from the oil feed nozzle 19 into the vaporization chamber 11. This kerosene collides with the inner wall of the vaporization chamber 11 and is vaporized into vaporized gas, which flows downward while mixing with vaporized air in the mixing chamber 10 to become a premixed gas and flow into the uniformity chamber 15. This premixture is diffused in the uniform chamber 15, becomes a uniform mixture, and is supplied to the burner head 16 where it is combusted to form a uniform flame. Then, the combustion gas passes between the plurality of heat receiving fins 12 and further rises along the outer wall of the vaporization chamber 11.

As described above, according to the oil combustion apparatus of the embodiment of the present invention, since the heat receiving fins 12 are formed in a plurality of rectangular shapes, the heat receiving area thereof is large, and the vaporization chamber 11 can sufficiently receive combustion heat. Therefore, the heat receiving fins 12
Even if the temperature of each heat receiving fin 12 is lowered by increasing the distance between the heat receiving fin 12 and the burner head 16, the set temperature of the vaporizer 9 necessary for continued combustion is maintained, and thermal deterioration of the vaporizer 9 is prevented. can do. In addition, after ignition, the heat receiving fin 12
Since the heat received is immediately transferred to the inner wall of the vaporization chamber 11, the heat capacity of the vaporizer 9 can be reduced to the extent that the temperature of the vaporization chamber 11 does not drop, and the vaporizer 9 is heated to the set temperature. The time required for this can be reduced.

On the other hand, during combustion standby with the vaporizer 9 maintained at the set temperature, the vaporization chamber 11 acts on heat radiation, but since the heat receiving fins 12 are provided at the lower part of the outer wall of the vaporization chamber, they act as air flow path resistance and prevent natural convection. This suppresses heat radiation, reduces heat radiation loss from the vaporizer 9, and reduces power consumption.
This will reduce your electricity bill.

Note that in this embodiment, the heat receiving fins 12 are connected to the vaporization chamber 11.
Although the heat receiving fins 12 have been described as being provided on the lower part of the outer wall surface of the vaporizing chamber 11 in a direction perpendicular to the mixing chamber 10, the heat receiving fins 12 may be provided on the outer wall surface of the vaporizing chamber 11, or may be provided obliquely or parallel to the mixing chamber 10. The point is that the heat transfer between the heat receiving fins 12 and the vaporizing chamber 11 should bring about the effect of the present invention.

Effects of the Invention As is clear from the above embodiments, the following effects can be obtained according to the present invention.

(1) Since a large heat-receiving area is obtained by the heat-receiving fins, the set temperature of the vaporizer necessary for continued combustion can be maintained even if the temperature of the heat-receiving fins is low, thereby preventing thermal deterioration of the vaporizer.

(2) Since the heat receiving fins are installed above the burner head, the heat received by the heat receiving fins is immediately transferred to the vaporization chamber after ignition, so the temperature of the vaporizer is maintained to the extent that the temperature of the vaporizer does not drop. The heat capacity can be reduced, and thereby the time required to heat the vaporizer to the set temperature can be shortened.

(3) Heat receiving fins are provided on the outer wall of the vaporization chamber, so
Natural convection is suppressed and the heat radiation loss of the vaporizer can be reduced.

[Brief explanation of drawings]

Fig. 1 is a side sectional view of the main part of an oil combustion device according to an embodiment of the present invention, Fig. 2 is a side sectional view with the same part cut away, Fig. 3 is an external perspective view of the main part with the same part cut away, and Fig. 4 is a side sectional view of a conventional oil combustion device. 9... Carburizer, 10... Mixing chamber, 11
...... Vaporization chamber, 12 ... Heat receiving fin, 1
3... Heater, 14... Premixture outlet, 15... Uniform chamber, 16... Burner head, 17... Carburizer Entrance, 19...
Oil supply nozzle.

Claims (1)

[Claims] A vaporizer formed of a mixing chamber, a vaporizing chamber that communicates with the upper part of the mixing chamber and has a built-in heater, a heat receiving fin provided on the outer wall of the vaporizing chamber so as to face above the burner head, and An open premixture outlet, a uniform chamber communicating with the premixture outlet, the burner head provided at the upper opening of the uniformity chamber, a carburetor inlet opened at the side of the vaporization chamber, and the carburetor inlet. an oil-feeding nozzle arranged facing toward the vaporization chamber.