JPS616504A - Kerosene burner - Google Patents

Abstract

PURPOSE:To prevent the generation of yellow flame, soot and unburnt noxious constituent, that is carbon monoxide, by a method wherein air holes formed on a perforated plate except red heat body near substantially vertical slits for preventing thermal deformation, are arranged coarsely and the amount of inflow air is uniformed in the longitudinal direction. CONSTITUTION:Air holes 9a are arranged sparsely near slits C. When the kerosene 2 sucked by a wick, is fired at the tip of the wick 7 by an igniter, the flame spreads all over the tip, the air for burning is supplied by draft power to the lower air path 15 from an air inlet 4, a part of it enters into a combustion chamber 14 from the air holes 8a, 9a, the balance of it enters into an upper air path 16 from air holes 11a, 10a, provided at the first and second partitions and futher a part of it, is supplied to the combustion chamber 14 from the air holes 8a, 13a, therefore, the air is supplied for the burning in the secondary burning section 17 finally. The control of the amount of the burning is consisted of the wide range control possibility in proportion to the quantity of air supplied, therefor, it is effected by changing the opening of exhaust gas outlet 20 with a damper 19 and controlling the draft power.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an oil combustor, which has a combustion chamber having a substantially straight horizontal cross-sectional shape, is relatively small, and is used primarily for heating purposes.

Conventional structure and its problems Lighting wick vaporization type oil combustors whose horizontal cross-sectional shape is approximately straight (hereinafter referred to as linear combustors) suffer from significant thermal deformation during combustion, and as a countermeasure, A method has been adopted in which multiple slits are formed in the perforated plate of the combustion chamber to absorb thermal expansion. The shape of the slit has been considered to be approximately vertical, diagonal, or a combination of both, but a vertical slit is advantageous because of its simple structure and ease of production.

However, when the above-mentioned substantially vertical slit is configured, the non-uniformity of combustion is significant in the longitudinal direction of the linear combustor, resulting in a slight shift in the air-fuel ratio and the generation of unburned harmful gases such as CO or soot. It is easy to burn, and also has a large unfavorable effect on the red-hot body or secondary combustion flame in terms of appearance. Furthermore, regarding a type of combustor that adjusts the combustion amount by changing the amount of combustion air supplied, this has been a major obstacle to expanding the adjustment period.

The reason for this is that although the slit to prevent thermal deformation is useful for that purpose, excess air enters from that part and excessive combustion occurs in the same part, resulting in the final secondary slit just above the opening. There was more air in the combustion part than in other parts, resulting in a shorter flame length, and in extreme cases, the flame could blow off and generate a large amount of unburned toxic gas. In addition, in the incandescent body, when the slits were straight, the brightness decreased, which was unsatisfactory in terms of appearance and radiation efficiency.

OBJECTS OF THE INVENTION It is an object of the present invention to solve the various problems in the conventional examples and to provide an oil combustor that is easy to use, practical, and suitable primarily for heating purposes.

Structure of the Invention In order to achieve the above object, the present invention has a large number of pores and
A substantially linear combustion chamber is formed by a perforated plate having a plurality of substantially vertical slits, a lamp wick is faced at the lower part thereof, and a red-hot body is formed at the upper part of at least one side of the perforated plate, and the combustion chamber is opposed to the red-hot body. A part of the outer cylinder is formed of a heat-transparent material, and the pores are made sparser in the vicinity of the slits of the other perforated plate of the incandescent body than in other parts, and further provided with means for varying the supply air for combustion. DESCRIPTION OF EMBODIMENTS An outline of an embodiment according to the present invention is shown in FIG. 1 in a vertical sectional view.

1 is a fuel tank in which g oil 2 is stored as fuel. Reference numeral 21 is a frame that supports the entire structure, and 3 is a wick interior panel used when the lamp wick 7, whose lower part is immersed in petroleum 2, is moved up and down. The vertical movement mechanism for the wick is omitted here. 6
has a fire pan, and an outer cylinder 22 is constructed on a cylinder metal 23. A first perforated plate 9 and a second perforated plate 8 each having a large number of pores 8a, 9a, 13& and a plurality of substantially vertical slits.
A combustion chamber 14 is formed by the third perforated plate 13 which becomes a red-hot body. A window 12 is made of a heat-resistant, heat-transparent material such as glass, and is fixed to the outer cylinder 22 with a window member 24 . ?
11 and 10 are first and second partition plates, 18 is a third partition plate, and 17 is a secondary combustion section. Reference numeral 19 is a tamper that adjusts the opening of the exhaust gas outlet 2o, changes the draft force, and changes the amount of supplied air.

Next, the operation will be briefly explained. When the petroleum 2 sucked into the lamp wick 7 is ignited by an igniter (not shown) at one end of the lamp wick 7, combustion spreads throughout the entire area, and the draft force moves the combustion air from the air intake 4 to the lower air channel 16. , and a part goes from the air holes 8a and 92L to the combustion chamber 14, and the rest goes from the through holes 11a and 10a provided in the first and second partition plates to the upper air passage 16, and a further part goes to the air hole 8a. 132L
The fuel is then supplied to the combustion chamber 14 and finally provided for combustion in the secondary combustion section 17. Since the combustor according to the present invention is configured to be adjustable over a wide range in proportion to the amount of electricity supplied, the combustion amount can be adjusted by changing the opening of the exhaust gas outlet 20 with the damper 19 and adjusting the draft force. There is.

FIGS. 2 and 3 show the arrangement of the pores 9 & and the slots 7) A and B for preventing thermal deformation in a conventional example of the first perforated plate 9.

FIG. 4 shows the arrangement of the otsu ode, holes 9 &, and slits C in one embodiment of the present invention in the same part.

At this time, the pores are arranged sparsely in the vicinity of the slit C, but it is not sufficient to reduce the pore diameter without changing the arrangement, but it is possible to obtain the same effect as the objective of the present invention. The method according to the present invention is optimal also from the viewpoint of ease of processing.

Effects of the Invention As explained above, according to the present invention, the pores in the vicinity of the substantially vertical slits formed in the porous plate other than the incandescent body to prevent heat and shape are made sparse, and the pores are made sparse to prevent interference with other parts. By making the amount of air inflow uniform in the longitudinal direction, the following effects can be obtained.

f&) In the longitudinal direction of the approximately linear combustion chamber, it is possible to homogenize combustion in each part, so in the red-hot part, the brightness is uniform on the higher side, improving the appearance and radiation efficiency, and improving the secondary combustion flame. As the fuel consumption became more uniform, yellow flame, soot, and carbon monoxide (Go), which is an unburned harmful component, were less likely to be generated.

(bl) Due to the effect of (i!L) above, in the combustion amount variable region (range of 1 to 0.4 when the maximum combustion amount is 1), the air-fuel ratio for the combustion amount is within the permissible range (on the smaller side, soot begins to appear). Yellow fire occurred just before, G O/G on the larger side
The range in which O2 is 0.002 or more) is approximately twice that of the conventional model, making it possible to provide a combustor that is resistant to changes over time and external disturbances such as gusts of wind.

[Brief explanation of drawings]

FIG. 1 is a longitudinal cross-sectional view of an outline of one embodiment according to the present invention, and FIG.
FIG. 3 is a plan view showing a part of a first perforated plate according to a conventional example, and FIG. 4 is a plan view showing a part of a first perforated plate according to an embodiment of the present invention. 7.Light wick, 8.9.13...Second, first, and third perforated plates, 12...Window, 14...Combustion chamber, 9L pores, C...Slit. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (2)

[Claims] (1) A substantially linear combustion chamber formed by a perforated plate having a large number of pores and a plurality of substantially vertical slits has a wick facing at the bottom, and the upper part of at least one side of the perforated plate is a red-hot body, A part of the outer cylinder facing the incandescent body is formed of a heat ray transparent material, and in the vicinity of the slit of the perforated plate excluding the incandescent body, the pores are sparsely formed compared to other parts. vessel. (2) The oil combustor according to claim (1), comprising means for varying the supply air for combustion.