JP2718301B2 - 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 heat-receiving petroleum combustion apparatus for recovering a part of combustion heat in a vaporizer.

[0002]

2. Description of the Related Art In a conventional apparatus of this type, as shown in FIG. 4, a heater 2 is built in a vaporizer 1 and a vaporization chamber 4 is formed by being partitioned by a vaporizer lid 3 inside. At the upper end, a heat receiving wall 5 is provided. A vaporizing air port 6 opens in the vaporizing chamber 4, and an oil feed nozzle 8 connected to a fuel pump 7 faces. A burner head 9 is provided above the vaporizer lid 3.
Is provided, and a secondary air diffusion plate 11 is provided on the upper portion thereof with a gap 10 interposed therebetween. In the center of the vaporizer 1, a secondary air pipe 1 extends through the vaporization chamber 4 from the bottom of the vaporizer 1.
2 are standing. A carburetor cover 14 is provided on the outer periphery of the carburetor 1 via an air chamber 13, and a fan 15 is attached to the carburetor cover 14. A tertiary air port 16 is opened between the outer periphery of the heat receiving wall 5 and the carburetor cover 14.

In the above configuration, when the heater 2 is energized and the vaporizer 1 is heated and held at a predetermined temperature, the fan 15
And the refueling pump 7 operates to start supplying the combustion air and the fuel. The fuel supplied via the oil supply nozzle 8 is
The heated inner wall of the vaporizer 1 is vaporized into vaporized gas, and a part of the combustion air flowing into the air chamber 13 flows into the vaporizing chamber 4 as vaporized air from the vaporized air port 6 and mixes with the vaporized gas. It becomes premixed air. The premixed gas is ejected from the burner head 9 through the carburetor lid 3 and is ignited by an igniter (not shown) and burns. On the other hand, the secondary air is ejected from the outer periphery through the gap 10 of the secondary air diffusion plate 11 through the secondary air pipe 12, and the tertiary air is ejected upward from the tertiary air port 16 to perform complete combustion. When combustion starts,
The heat receiving wall 5 receives a part of the combustion heat to reduce the amount of electricity (electricity bill) to the heater 2 during combustion.

[0004]

However, in the above configuration, since the heat from the combustion heat is received by heating the heat receiving wall 5 with the combustion flame in the burner head 9, the temperature at the upper end of the heat receiving wall 5 is reduced. There was a problem that the temperature exceeded the heat-resistant temperature of the constituent material (usually aluminum) of the heat receiving wall 5 and the vaporizer 1.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to suppress overheating of a heat receiving portion while securing a necessary heat receiving amount, and to ensure durability of constituent materials of the heat receiving portion and a vaporizer. is there.

[0006]

Means for Solving the Problems The present invention for achieving the above object, a plurality of strip-shaped burner port and the secondary air inlet is configured by combining alternately a plurality of secondary air passage which opens
A burner head and a vaporizer for supplying a mixture to the flame outlet
And heat receiving fins that collect part of the combustion heat into the vaporizer.
The heat receiving fins are provided along the secondary air passage.

[0007]

SUMMARY OF invention by the above configuration, since the heat-receiving fins arranged above the burner head is located along the relatively secondary air passage lower temperature, while the average heating of the side surface of the heat receiving fin by the combustion gases Prevents local overheating of the heat receiving section
Can Ru.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIGS. 1, 2 and 3, reference numeral 17 denotes a burner head, which is a plurality of strip-shaped flame ports 18 and a plurality of burners.
A cylindrical secondary air passage 20 having an open secondary air port 19 is alternately juxtaposed and combined, and secondary air passages 20 are provided at both ends of the combination. A heater 2 is provided at one longitudinal end of the head 17.
1 is connected, and an opening 23 of the secondary air passage 20 faces the other end.

The interior of the vaporizer 22 is divided by a partition wall 24, and a main vaporization chamber 25A to which fuel is always supplied during combustion.
And a sub-vaporization chamber 25B in which fuel is supplied or stopped in accordance with the required combustion amount, and a carburetor lid 27 having main and sub-primary primary air ports 26A and 26B opened on the side surface of the carburetor 22. The main and sub mixture ports 28A and 28B are opened at the lower end of the vaporizer 22. A main vaporizing surface 29A and a sub-vaporizing surface 29B are formed inside the vaporizer 22 so as to face the primary and secondary primary air ports 26A and 26B, respectively, and a main vaporizing surface 29A is formed on the outer surface of the vaporizer 22. Heat receiving fins 30 are provided facing each other. And
The heat receiving fins 30 are arranged at a position above the secondary air passage 20 and along the longitudinal direction of the secondary air passage 20.

The primary and secondary primary air ports 2 of the vaporizer lid 27
6A and 26B have main and sub fuel pumps 3 respectively.
Fuel nozzles 32A and 32B connected to 1A and 31B face.

A mixing container 33 is connected to the lower part of the vaporizer 22 and the burner head 17.
A part of 3 serves as a partition 34 and divides the inside of the mixing container 33 into main and sub mixing chambers 35A and 35B in the longitudinal direction. The partition 35 abuts against the lower surface of the secondary air passage 20 to move the burner head 17 in the longitudinal direction of the main / sub burner head 1.
It is divided into 7A and 17B. Also, the burner head 17
A burner case 36 is provided on the outer periphery of the upper part except for a connection portion with the carburetor 22, and a combustion chamber 37 is formed therein.

The carburetor 22 and the burner case 36 are surrounded by an outer peripheral wall 39 with an air passage 38 therebetween, and the outer peripheral wall 39 has an air passage 40 from a combustion fan (not shown).
Is connected.

In the above configuration, the vaporizer 22 is provided with the heater 2
1 and is maintained at a predetermined temperature. Here, the combustion fan 41 and the main and sub fuel pumps 31A and 31B operate to start the combustion. Fuel pump 31A
The liquid fuel supplied by the fuel nozzle 31B
-It is supplied from 32B to the main vaporizing surface 29A and the sub-vaporizing surface 29B and vaporized. On the other hand, the combustion air is supplied to the air passage 38 by the combustion fan through the air passage 40, and a part of the air is supplied as primary air to the primary and secondary primary air ports 26A and 26A.
The gas flows into the main and sub-evaporation chambers 25A and 25B via B and mixes with the vaporized fuel to form a mixer. The mixture is supplied from the main / sub mixture ports 28A and 28B to the main and sub mixture chambers 35.
A ・ 35B, and supplied to the burner head 17
From 8, the fuel is injected into the combustion chamber 37 and ignited by an igniter (not shown) to burn. On the other hand, the secondary air also supplied from the combustion fan 40 flows into the secondary air passage 20 from the opening 23 through the air passage 39 surrounding the outer periphery of the burner case 36, and flows into the combustion chamber 37 from the secondary air port 19. The gas is ejected and provided for combustion, and complete combustion is performed.

When the fuel pump 31B connected to the fuel nozzle 32B facing the sub-vaporization chamber 25B is stopped to reduce the amount of combustion, the combustion in the sub-burner head 17B connected to the sub-mixing chamber 35B is stopped. Stopped.

When the combustion is started in the above operation, a part of the combustion heat is supplied to the vaporizer 22 by the heat receiving fins 30 arranged above the burner head 17 (main burner head 17A) and adjacent to the main vaporizing surface 29A. The heater 21 is collected and the amount of electricity to the heater 21 is reduced. At this time, the heat receiving fins 30 are located above the secondary air passage 20 of the burner head 17 in the secondary air passage 2.
0, the lower end of the heat receiving fins 30 which usually has the highest temperature due to a short distance from the flame port 18 where combustion is performed is discharged from the secondary air port 19 to the secondary end. Cooled by air, the heat receiving fins 30
Local overheating can be prevented. Furthermore, since the high-temperature combustion gas passes through the gap between the heat receiving fins 30 and averagely heats the side surfaces of the fins, even if the heat receiving fins 30 can be extended to secure the required amount of heat received, the local area of the heat receiving fins 30 can be secured. This has the effect that excessive overheating is prevented and the temperature of the heat receiving fin 30 is not exceeded.

[0017]

As described above, according to the petroleum combustion apparatus of the present invention, the following effects can be obtained. (1) A burner head in which a plurality of strip-shaped flame openings and a plurality of secondary air passages having secondary air openings are alternately combined .
Secondary <br/> or found there as structure provided along the air passage to heat Fi down to recover part of al of combustion heat to the vaporizer, while ensuring the heat necessary amount suppress overheating of the heat receiving fin it can.

[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 FIG. 1 in the apparatus.

FIG. 3 is a side sectional view of the apparatus.

FIG. 4 is a longitudinal sectional view of a conventional oil combustion device.

[Explanation of symbols]

 17 Burner head 18 Flame port 19 Secondary air port 20 Secondary air passage 22 Vaporizer 30 Heat receiving fin

Claims (2)

(57) [Claims] 1. A burner head comprising a plurality of band-shaped flame ports and a plurality of secondary air passages each having an open secondary air port alternately combined, and a carburetor for supplying a mixture to the flame ports. When, a heat receiving fins to recover a portion of the combustion heat to the vaporizer
An oil-burning device, wherein the heat-receiving fins are provided along the secondary air passage. 2. A carburetor having a main vaporization chamber formed by partitioning the interior and always supplying fuel during combustion and a sub-vaporization chamber for supplying or stopping fuel according to a required combustion amount. A main / sub burner head to which the air-fuel mixture is supplied from each of the sub-vaporization chambers and a heat receiving fin arranged in close proximity to a vaporization surface of the main vaporization chamber are provided above the secondary air passage in the main burner head and at the secondary side. 2. The oil burning device according to claim 1, wherein the oil burning device is disposed along the air passage.