JPS60134107A - Kerosene burner - Google Patents

Abstract

PURPOSE:To make a large radiation area, reduce a generation of CO or odor and make a wide adjusting range of combustion volume by a method wherein a secondary air passage is arranged at the upper part of a rear porous plate and the flow toward the upper part of a red heated body is closed by a closing plate. CONSTITUTION:A wick 1 is immersed in the fuel in a fuel tank, its upper end is exposed in a combustion chamber. The combustion chamber is defined by a clearance between a front porous plate 2 having several apertures 2a and a rear porous plate 3 having several apertures 3a. A red heating body 4 made of rath, punched metal, metallic net or the like is arranged on the front porous plate. The red heating body 4 may integrally be formed with the front porous plate 2. In order to discharge the radiation heat from the red heating body 4 to the front surface, a transparent body 5 made of transparent material such as glass or the like is arranged, and a front outer plate 6 for covering the front surface, a rear outer plate 7 convered at the rear surface and a partition plate 8 fixed to the rear outer plate 7 and forming a secondary air hole 9 by a clearance between the partition plate and the upper end of the rear porous plate 3. Further, a closing plate 10 fixed to the red heating plate 4 and substantially closing the clearance between the red heating plate 4 and the transparent body 5 is positioned substantially at the same position as that of the partition plate 8.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oil combustor that achieves clean combustion and energy savings.

Conventional configuration and problems Combustors using a lighting wick as a fuel supply means are often used as household heaters such as kerosene heaters.

However, most of them consist of cylindrical wicks and combustion tubes, so they can be installed in the center of the room, or installed on the wall of the room with a reflector to deflect the radiant energy in one direction. However, it had the disadvantage of requiring a large installation area due to its large depth dimension. To overcome this drawback, a flat burner using a straight wick and combustion tube has been proposed, but the conventional burner has a narrow adjustable range of combustion amount.
It has drawbacks such as poor radiation efficiency.

A conventional planar burner is constructed as shown in FIG. That is, 1 is a lamp wick whose lower end is not shown in the figure, but is immersed in the fuel in the fuel tank, and its upper end is exposed in the combustion chamber. 2 is a front perforated plate having a large number of small holes 2a;
3 is a rear perforated plate having a large number of small holes 3a, and a combustion chamber is formed in the gap between the rear perforated plate 3 and the front perforated plate 2. Reference numeral 4 is a red-hot body which is arranged continuously on the front perforated plate 2 and is made of lath-punched metal, wire mesh, etc.; 5 is a light-transmitting body made of a heat-resistant light-transmitting material such as glass; and 6 is a light-transmitting body which covers the front surface +]fJ' A-plate, 7, is the posterior body covering the rear surface.

In the configuration described in -1-, the fuel gas vaporized from the tip of the lamp wick 1 in the steady combustion state is supplied through the small holes 2a13a of the front perforated plate 2 and the rear perforated plate 3 and the opening 1'' of the incandescent body 4 by natural draft. The mixture is mixed with air, gradually burned, and discharged from the combustion chamber ii'B to the outside of the appliance.

In this type of combustion method, the air is supplied in a highly dispersed manner (because it is supplied from small holes), so there is a large amount of unburned gas at the bottom of the combustion chamber, and as it moves toward the top, there is a large amount of unburned gas. The fuel gas components become diluted, making complete combustion difficult.

Therefore, complete combustion is achieved by intensively supplying air with a suitable amount of unburned gas remaining (within the iJJ fuel mixture ratio region).
secondary combustion). According to the conventional configuration, secondary combustion air is supplied from the opening of the incandescent body 4, so if air is supplied in a concentrated manner, only the incandescent body in the vicinity becomes red hot, making it impossible to secure a wide incandescent area. Also, if air is distributed and supplied to create a red-hot area, incomplete combustion will occur.c.

This has the disadvantage that increasing the red-hot area and reducing CO and odor cannot be achieved at the same time.

Even if an appropriate air supply could be achieved at a constant combustion rate, the balance between air and fuel would be disrupted due to the amount of fuel vaporized from the wick being adjusted to adjust the amount of fuel, resulting in a good combustion condition. ) I couldn't do it.

Departure II! 140 OBJECTIVES The present invention aims to solve these drawbacks by providing a combustor that has a wide running surface, generates less CO and odor, and has a wide range of combustion amount adjustment. It is.

Construction of the starting point To achieve this objective, the present invention provides two
In addition to providing a secondary air passage, a shielding plate blocks the air flow to the upper part of the red-hot body, and the high-temperature waste gas after combustion causes the body to become red-hot.

, at the +116 configuration, the secondary air supply position is 11°'1'
By setting JII to a position of IJJ, complete combustion can be achieved by secondary combustion since the vaporized gas reaches a lean state when the combustion amount is low. In addition, because the high-temperature waste gas after secondary combustion heats a part of the incandescent body to become red-hot, the heat energy that would have been discharged outside the appliance due to convection is converted into radiant energy that is effective for heating the human body. It can be converted into a wide-width rule surface.

DESCRIPTION OF EMBODIMENTS Next, an embodiment of the present BIll will be described with reference to FIGS. 2 and 3.

In FIG. 2, reference numeral 1 denotes a lamp wick whose lower end, although not shown in the figure, is immersed in the fuel in the fuel tank, and whose upper end is exposed in the combustion chamber. 2 is a 1Jfl perforated plate having a large number of small holes 2a, 3 is a rear perforated plate having a large number of small holes 3a, +j
A combustion chamber is formed in the gap with the perforated plate 2.

Reference numeral 4 denotes a red-hot body made of lath-punched metal, wire mesh, etc., which is connected to the 11 perforated plate 2;
1 and the perforated plate 2 may be integrated. Reference numeral 5 denotes a light transmitting body made of a light transmitting material such as glass, which is provided to emit the radiant heat of the incandescent body 4 to the front surface; 6, a front outer plate that covers the front surface; 7, a rear outer plate that covers the rear surface; 8; 10fd is a partition plate fixed to the rear outer plate and forming secondary air holes 9 in the gap with the upper end of the rear perforated plate 3;
This is a shielding plate that is fixed to the incandescent plate 4 and substantially closes the gap between the incandescent plate 4 and the transparent body 50, and is provided at approximately the same height as the partition plate 8.

In the above structure, when the tip of the lamp wick 1 is ignited, the fuel is vaporized by the combustion heat and the air flow supplied through the small holes at the bottom of the front perforated plate 2 and the rear perforated plate 3 through natural rafts, It burns while mixing with air supplied from all the pores of the plate and the opening of the incandescent body 4 below the shielding plate 8. At this time, part of the vaporized gas vaporized from the lamp wick is combusted by the air described in 1a, and a small part is in the state of mixed gas (unburnt gas). gradually decreases. The mixed gas flows through the secondary air port 9.
When the gas reaches the vicinity of 1, air is supplied intensively and combustion occurs rapidly, raising the combustion temperature to almost complete gastric combustion.

The waste gas after combustion rises along the second part of the incandescent body 4, heats the incandescent body to become red-hot, and releases its thermal energy into e, i!
Convert to JJ energy.・When the amount of vaporized gas is large (high combustion amount), combustion does not end near the secondary air port 9 and the flame length becomes longer, but as it rises without touching the red-hot plate, the unused gas in the flame Mixing of the mixture and air is promoted by the local excess flow, resulting in almost complete combustion. At this time, if there is an air flow that has not been preheated near the incandescent plate, the combustion reaction will be interrupted by cooling the flame, and the air flow will be prevented by the shielding plate 9 in order to generate C○ and odor. Effects As explained above in 1, according to the present invention, secondary air holes are provided in the upper part of the rear perforated plate, and a shielding plate is provided in the incandescent plate to block the air flow to the upper part of the incandescent plate. (1) By heating a part of the incandescent body to red heat with high temperature waste gas after secondary combustion, the conversion efficiency of combustion heat into radiant energy is high and the radiant area is wide.

(2) By forming a secondary combustion flame even when the combustion amount is low, CO and odor are less generated and the combustion amount can be varied over a wide range.

(3) Since the flame is located behind the incandescent plate, even if there is some yellowing or unevenness of the flame, it is not visually noticeable.

The following effects can be obtained.

[Brief explanation of drawings]

Figure 1 is a sectional view of the stopper part of a conventional oil combustor, Figure 2 is a cross-sectional perspective view of an oil combustor showing an example of an undeveloped oil combustor, and Figure 3 is a main part of the Ishiki 11 combustor. FIG. 1... Lamp wick, 2... Eye 11 perforated plate, 3
...... Rear perforated plate, 4... Red-hot body, 5...
... Translucent plate, 6,7... Outer plate, 8...
...Partition plate, 9...Secondary air passage, 10...
...Blocking board. Name of agent: Patent attorney Toshio Nakao and one other person
1 Figure 2? and a

Claims (3)

[Claims] (1) A straight line L lamp wick and a pair of perforated plates on the front and rear sides of the lamp wick, and an outer plate that covers them and is equipped with a transparent body made of a transparent material such as glass on the front side, and An incandescent plate having an aperture d ratio larger than that of the perforated plate is provided in a row above the front perforated plate, and a shielding plate for blocking upward air flow is provided on the front surface of the incandescent plate at approximately the middle □. Further, a partition plate is provided at a constant interval above a rear perforated plate located at approximately the same height as the blocking plate to form a secondary air passage. (2) The oil combustor described in Patent 1: Ancient scope, item 1, in which the incandescent body and the front perforated plate are configured as one unit. (3) The oil combustor according to claim 1, wherein the incandescent body is divided into two bodies, an upper and a lower body, by a shielding plate portion.