JPS606450B2 - combustion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a combustion device with improved wind resistance.

Natural ventilation type combustion devices such as kerosene stoves tend to lose the air pressure balance between the air suction side and the combustion side of the combustion tube, and when the wind blows, the upper part of the combustion tube, which is wide open at the front, tends to be in position. There were problems such as the wind pressure in the upper chamber prevailing and the combustion flame backfiring into the lower chamber located at the bottom of the combustion cylinder, causing damage to mechanical parts and lead wires near the tank. For this reason, a windproof plate is installed on the guard in front of the combustion tube, and a flame shield plate is installed above the fuel tank to surround the combustion tube. However, because of various conditions such as the closure of the front reflector, the depth position of the combustion tube, and the air collection structure at the bottom of the fuel tank, satisfactory results were often not obtained. The present invention solves this problem by utilizing a hot air blowing function built into the combustion device, and one embodiment thereof will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a box-shaped cabinet with an open front, the interior of which is divided into upper and lower sections by a lower reflector 2, and the front of the lower chamber la is closed by a plate lb. In addition, the plate body lb includes a wick adjustment knob 3 for raising and lowering the wick (not shown) and an ignition device 4.
is provided through it. Further, a combustion cylinder 6 is arranged above the fuel tank 5 in the lower chamber la. Lower reflector 2
A front reflector plate 7 is provided at the upper part of the combustion chamber 6 at a position surrounding the combustion tube 6. 8 is a fuel tank, and 9 is a lead wire connecting the ignition device 4 and a power source battery (not shown).

To explain the ventilation mechanism, indoor air is sucked in from the open IA installed in the 10' cabinet, and the combustion tube 6 is
It is a blower for blowing air upward, and 11 is a blower 10.
'This is an electric motor installed.

10A is an outlet for blowing out the air sucked into the blower 10, 12 is a duct placed on the back of the front reflector 7, and the lower part thereof has a connection port 12A surrounding the outer periphery of the outlet 10A. There is.

Moreover, the upper part has an air outlet 12B that is closed toward the front above the combustion tube 6, and the air from the blower 10 is mixed with the combustion gas from the combustion tube 6 to form warm air, which is then blown out toward the front of the appliance. It becomes. In combustion appliances based on this type of radiation, when wind blows from the front, the combustion tube 6
Due to the area of the entrance, the wind pressure from above is superior to the wind pressure from above, and the combustion flame backfires from the bottom of the combustion tube 6 as shown in Figures 2 and 4 a, resulting in the following: Such drawbacks may occur. ■ The flame and hot air hit the igniter 4 installed at the bottom of the combustion tube 6, burning out the lead wire 9, etc.
■ Due to combustion draft, etc., the top surface of the fuel tank 5 is
Garbage, dust, etc. tend to accumulate, and there is a risk of ignition.
etc.), causing a foul odor and soot, which may cause a fire.

■ As the lower part of the combustion tube 6 and the upper part of the fuel tank 5 are heated, the amount of gas generated increases, leading to abnormal combustion, ignition, and backfire.

On the other hand, in the embodiment of the present invention, the outlet area of the connection port 12A with the outlet port 10A at the bottom of the lower reflector 2 of the duct 12 having the outlet port 128 above the combustion tube 6 is set to be smaller than the outlet area of the outlet closing port 10A. It was made larger, and a gap b was provided at this connection part.

For this reason, when wind blows, if the blower 10 is not driven and is used as a mere reflective combustion appliance, the wind blowing into the upper part of the combustion tube 6 will be removed from the air outlet 12B of the duct 12. By passing through the duct 12, passing through the blower 10, and exiting from the opening IA of the cabinet 1 to the outside of the cabinet, the air pressure on the upper part of the combustion tube 6 is lowered.
A part of the wind flows into the lower part of the lower reflector plate 2 through the gap b between the air outlet and the open low OA, increasing the wind pressure at the lower part of the combustion tube 6. Therefore, the wind pressure above and below the lower reflector 2 is stronger and balanced at the lower part, eliminating the leakage of combustion flame to the lower part of the combustion tube 6.Also, when the blower 10 is used, the upper part of the combustion tube 6 is Due to the blowing wind, the wind trying to exit from the outlet 12B of the duct 12 is pushed and forced to exit from the outlet 12B. Therefore, a part of this air connects to the connection port 12A at the bottom of the lower reflector 2. It flows out from the gap b between the blower 10 and the outlet opening 10A, increasing the wind pressure at the bottom of the combustion tube 6. Therefore, in this case as well, the wind pressure is balanced so that it is stronger at the bottom.
The leakage of combustion flame to the lower part of the combustion tube 6 is eliminated. According to experiments, when the above wind hits, a sharp flame d with a sharp shape appears on the combustion tube 6 as shown in Figures 2 and 4.
occurred, and it was confirmed that the wind pressure at the bottom of the combustion tube 6 had completely increased, and that the upper and lower wind pressures were balanced. In this embodiment, more effective wind resistance can be obtained by combining with conventional wind resistance measures (wind resistance plates, etc.).

As described above, the present invention can rationally improve the wind resistance function by utilizing the hot air blowing function, and can extremely improve the safety.

[Brief explanation of the drawing]

FIG. 1 is a front view of a combustion device according to an embodiment of the present invention;
FIG. 2 is a partially cutaway front view, FIG. 3 is a plan sectional view, and FIG. 4 is a side sectional view. 1...Cabinet, Turtle a...Lower chamber, 2...Lower reflector (plate body) 6...Combustion tube, 10...Blower, 1
0A...Blowout exit (connection port), ]2...Duct, 12
A...Connection port, b...Gap. Figure 1 Figure 4 Figure 2 Figure 3

Claims (1)

[Claims] 1 The inside of a box-shaped cabinet is partitioned into upper and lower parts by a plate, the front of the lower chamber is closed off, and a combustion tube is installed through the plate above and below, and a blower and air from the blower are installed in the lower chamber. A duct is provided to blow out the air from the top of the combustion cylinder toward the front, and the duct and the blower are connected in the lower chamber, and a gap is formed between the connection port of the duct and the connection port of the blower at this connection point. A combustion device featuring: