JPH0124965B2 - - Google Patents

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 configurations and their problems Combustors that use a lighting wick as a fuel supply means are often used as household heaters such as kerosene stoves. However, most of them consist of cylindrical wicks and combustion tubes, so they are either installed in the center of the room or equipped with a reflector to redirect the radiant energy in one direction and direct the radiant energy toward the wall of the room. However, it had the disadvantage of requiring a large installation area due to its large depth. To overcome this drawback, a planar burner using a linear wick and combustion tube has been proposed, but conventional burners have drawbacks such as a narrow adjustable range of combustion amount and poor radiation efficiency. There is.

A conventional planar burner is constructed as shown in FIG. That is, 1 is a lamp wick whose lower end is omitted 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 large number of small holes 3a;
This is a rear perforated plate having a rear perforated plate, and a combustion chamber is formed in the gap between the rear perforated plate and the front perforated plate 2. Reference numeral 4 is an incandescent body that is arranged continuously on the front perforated plate 2 and is made of lath punching metal, wire mesh, etc.; 5 is a transparent body made of a heat-resistant light-transmitting material such as glass; 6 is a front outer plate that covers the front surface; 7 is a rear external body that covers the rear surface.

In the above configuration, the fuel gas vaporized from the tip of the lamp wick 1 in the steady combustion state is transferred to the small holes 2a, 3a of the front perforated plate 2 and the rear perforated plate 3 and to the incandescent body 4.
It mixes with air supplied by natural draft through the opening of the combustion chamber, gradually burns, and is discharged from the top of the combustion chamber to the outside of the appliance. In this type of combustion method, the air is supplied in an extremely dispersed state (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 gas component becomes diluted, making complete combustion difficult. Therefore, complete combustion (2
(second 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. In addition, if air is distributed and supplied to create a red-hot area, incomplete combustion will occur, resulting in CO
It becomes easier to generate heat and odor, and the area of red heat increases.
The drawback was that it was not possible to reduce CO and odor at the same time. Furthermore, even if an appropriate air supply could be achieved at a constant combustion rate, adjusting the amount of fuel vaporized from the wick to adjust the fuel consumption would disrupt the balance between air and fuel, making it impossible to obtain good combustion conditions. Nakatsuta.

Purpose of the Invention The purpose of the present invention is to eliminate these drawbacks and provide a combustor that secures a wide radiation area, generates less CO and odor, and has a wide range of combustion amount adjustment. be.

Composition of the Invention In order to achieve this object, the present invention comprises a linear lamp wick, a pair of perforated plates in front and behind the lamp wick, and a transparent body made of a transparent material such as glass to cover the plates. A red-hot plate having an aperture ratio larger than that of the perforated plate is provided above the front perforated plate, and a red-hot plate having an aperture ratio larger than that of the perforated plate is provided, and an upward air flow is blocked on the front surface of the red-hot plate at approximately the middle part. In addition to providing a shielding plate to
A partition plate is provided on the upper part of the rear perforated plate located at approximately the same height as the shielding plate to maintain a constant distance from the rear perforated plate and guide upward airflow forward to form a secondary air passage. It is a combustor.

In the above configuration, by setting the secondary air supply position to an appropriate position, complete combustion can be achieved by secondary combustion before the vaporized gas reaches a lean state when the combustion amount is low. In addition, since the upper part of the incandescent body is heated to a red glow by the high-temperature waste gas after secondary combustion, the thermal energy that was conventionally discharged outside the appliance as convection heat can be converted into radiant energy that is effective for heating the human body.
A wide radiation area can be obtained.

DESCRIPTION OF EMBODIMENTS Next, embodiments of the present invention will be described based on FIGS. 2 and 3.

In FIG. 2, reference numeral 1 denotes 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 large number of small holes 2a
A front perforated plate 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 front perforated plate 2 and the front perforated plate 2. 4 is arranged continuously on the front perforated plate 2,
The incandescent body is made of lath-punched metal, wire mesh, etc., and the incandescent body 4 may be integrated with the front perforated plate 2. 5 is a transparent body made of a light-transmissive material such as glass, which is provided to emit the radiant heat of the incandescent body 4 to the front;
7 is a front outer plate that covers the front surface; 7 is a rear outer plate that covers the rear surface; 8 is a partition plate that is fixed to the rear outer plate and forms secondary air holes 9 in the gap with the upper end of the rear perforated plate 3; A shielding plate 10 is fixed to the incandescent plate 4 and substantially closes the gap between the incandescent plate 4 and the transparent body 5, and is provided at approximately the same height as the partition plate 8.

In the above configuration, when the tip of the lamp wick 1 is ignited, the fuel is vaporized by the combustion heat and the air flow supplied by natural draft from the small holes at the bottom of the front perforated plate 2 and the rear perforated plate 3, It burns while mixing with air supplied from all the pores of the rear perforated plate and the opening of the incandescent body 4 below the shielding plate 8. At this time, some of the vaporized gas vaporized from the lamp wick is burned by the air, and some of it rises as a mixed gas (unburned gas), so as it rises, the concentration of vaporized gas gradually decreases. do. When the mixed gas reaches the vicinity of the secondary air port 9, air is intensively supplied and the gas is rapidly combusted, so that the combustion temperature rises and almost complete combustion occurs.

The waste gas after combustion rises along the upper part of the incandescent body 4, heats the incandescent body to become red-hot, and converts the retained thermal energy into radiant 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 long, but as it rises while touching the red-hot plate, the gas and air in the flame are Mixing is promoted by the local excess flow, resulting in almost complete combustion. At this time, if there is an air flow that is not 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 CO and odor. .

Effects of the Invention As described above, according to the present invention, the following effects can be expected.

(1) By heating a part of the incandescent body with high-temperature waste gas after secondary combustion to make it red-hot, the efficiency of converting combustion heat into radiant energy is high and the radiant area is wide.

(2) By forming a secondary combustion flame even at low combustion rates, less CO and odor are generated, and the combustion rate can be adjusted over a wide range.

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

The following effects can be obtained.

[Brief explanation of drawings]

Figure 1 is a sectional view of the main parts of a conventional oil combustor, Figure 2
The figure is a cross-sectional perspective view of an oil combustor showing an embodiment of the present invention, and FIG. 3 is a sectional view of essential parts of the oil combustor. 1...Light wick, 2...Front perforated plate, 3...Rear perforated plate, 4...Incandescent body, 5...Translucent plate, 6, 7...Outer plate, 8...Partition plate, 9...2 Next air passage, 10...
...Blocking board.

Claims (1)

[Scope of Claims] 1. A lamp wick on a straight line, a pair of perforated plates in front and behind 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. established,
An incandescent plate having an aperture ratio larger than that of the perforated plate is provided in series on the upper part of the front perforated plate, and a shielding plate for blocking upward airflow is provided on the front surface of the incandescent plate approximately in the middle, and A partition plate is provided on the upper part of the rear perforated plate located at approximately the same height as the shielding plate to maintain a certain distance from the rear perforated plate and guide upward airflow forward, forming a secondary air passage. combustor. 2. The oil combustor according to claim 1, wherein the incandescent body and the front perforated plate are constructed 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.