JPH03217759A - Petroleum burning apparatus - Google Patents

Abstract

PURPOSE:To operate an apparatus at a safety side, even if combustion gas is leaked in the apparatus and the apparatus and its periphery become unsafe, by disposing temperature fuses in spaces between the back surface of a sheath and right, left ventilation ports of the sheath around a burner in the upper part of the sheath. CONSTITUTION:A temperature fuse 16a is disposed in a space between the left side surface of a sheath 10 and a ventilation port 11 around a burner 1, a temperature fuse 16b is disposed in a space to the rear surface of the sheath 10, and a temperature fuse 16c is disposed in a space between the right side surface of the sheath 10 and the port 11. The fuse 16a is melted to stop an apparatus before the apparatus reaches a dangerous temperature tf high temperature combustion gas is leaked from a left side packing 14 of the burner 1 or a packing 15. The fuse 16c is similarly melted if high temperature combustion gas is leaked from the right side packing A14 of the burner 1 a packing B15. The fuse 16b is melted to obtain the safety of the apparatus if high temperature combustion gas is leaked from a back surface packing 14 of the burner 1 or a packing 15.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an oil-burning appliance used for hot water supply and home heating. Conventional Technology In recent years, oil-burning appliances have become thinner and more compact, allowing them to be attached to the walls of buildings and saving space.

Conventionally, this type of oil-burning appliance is
It was generally configured as shown in the figure. The configuration will be described below with reference to the drawings.

As shown in FIG. 5, the combustion section 1 includes a vaporization section 1a that vaporizes fuel, a combustion chamber 1b that burns the vaporized fuel, and a combustion chamber 1b that converts water supplied from a water supply port 2 into hot water and supplies hot water from a hot water supply port 3. The exchanger 1c is further provided with an exhaust box 1d for discharging the combusted exhaust gas to the outside of the device through an exhaust port 4. 5 is a blower that supplies the air necessary for combustion to the combustion section 1 through an intake port 6. It takes in air and blows out air. 7 is an oil bomb, which supplies fuel necessary for combustion to the combustion section 1 through a fuel supply port 8.
It draws up more and supplies it. 9 is a control unit that performs electrical control of the equipment. Reference numeral 10 denotes an exterior, and ventilation holes 11 are provided on the upper left and right sides of the exterior 10 to allow heat generated in the combustion section to escape to the outside of the equipment. (Ventilation vents may be provided on the back, top, or front side of the exterior.) Next, we will explain the 6th part. FIG. 6 is a plan view of FIG. 5. A fixing fitting 12 is attached to the back of the exterior 10 to be fixed to a wall 13 of a building or the like.

Next, Figure 7 will be explained. FIG. 7 is a detailed view of the combustion section l of FIG. 5. Combustion chamber 1b of combustion section 1 and heat exchanger 1
The joint c is sealed with packing A14 to prevent combustion gas from leaking into the equipment. Similarly, the space between the heat exchanger 1c and the exhaust box 1d is also sealed with a packing B15.

Problems to be Solved by the Invention In the configuration of such a conventional oil-burning appliance, if the gas sealing properties of the packing A14 and the packing B15 of the combustion section 1 deteriorate over time due to thermal effects, the combustion Part 1
The extremely high-temperature combustion gas burned inside the device is discharged into the device, causing the temperature inside the device to become abnormally high, and the components inside the device, especially the controller 9, etc., to easily reach temperatures that exceed their heat resistance, resulting in control malfunctions and This may cause a malfunction. Furthermore, the equipment is fixed to the wall 13 of the building with a fixing fitting l2, and the equipment and the wall 1
The distance of 3 is very close. Therefore, if the temperature of the wall 13 becomes extremely high due to the temperature of the combustion gas leaking inside the device, and the material of the wall 13 is flammable, etc.
In the worst case scenario, a fire may occur. In addition, combustion gas leaks outside the machine (very high temperature) from the ventilation holes 11 provided on the left and right sides of the exterior 10, and as mentioned above, if there are flammable objects such as buildings nearby, this can lead to a fire. be.

The packing A of the joint provided in the combustion section 1 in this way
If deterioration, thermal distortion, or a hole in the combustion part occurs in B14 or packing B15, combustion gas will leak into the machine, causing damage to the equipment, and in some cases, igniting the wall 13, etc., resulting in a fire. This poses an important issue regarding safety.

The present invention eliminates these conventional problems, and aims to operate the equipment safely even when combustion gas leaks into the equipment and the equipment and its surroundings become unsafe. There is.

Means for Solving the Problems In order to achieve the above object, the present invention has a structure in which a thermal fuse is arranged in the upper part of the exterior, surrounding the combustion part, and in the space between the back of the exterior and the left and right ventilation openings of the exterior. ．． According to the above-described structure, the present invention prevents abnormal combustion gas from leaking from the combustion section by providing a thermal fuse in the space between the rear side of the exterior and the exhaust ports on the left and right sides of the exterior, surrounding the combustion section in the upper part of the interior of the exterior. However, before the equipment reaches dangerous temperatures,
It blows the thermal fuse and shuts down the equipment. EXAMPLE Below, an oil-burning appliance according to an example of the present invention is shown in FIG. Figure 2. This will be explained using FIGS. 3 and 4. In addition, Figures 1 and 2. In Fig. 3, parts that are the same as those in the conventional example are given the same numbers, and in Fig. 5. Figure 6. Only the differences with Figure 7 will be explained. In FIGS. 1, 2, and 3, a thermal fuse 16a is installed in a space surrounding the combustion part 1 and the ventilation port 11 on the left side of the exterior 10, a temperature fuse 16b is installed in the space between the back and the exterior 10, Thermal fuses 16c are respectively arranged in the spaces between the ventilation opening l1 on the right side of the exterior 10. The thermal fuse 16a is configured such that when high-temperature combustion gas leaks from the packing 14 and packing 15 on the left side of the combustion section 1, the thermal fuse 16a blows out before the equipment reaches a dangerous temperature, and the equipment is destroyed. It is something that makes it stop. Thermal fuse 16
If high-temperature combustion gas leaks from the packing A14 and packing 815 on the right side of the combustion section 1, the section a will be fused before the equipment reaches a dangerous temperature, as described above. Thermal fuse 16b is configured to melt before the equipment reaches a dangerous temperature when high-temperature combustion gas leaks from the blue-faced packings 14 and 15 of the combustion section 1, thereby ensuring the safety of the equipment. It is to be ensured. In addition, the temperature fuse 16
a.Thermal fuses 16b and 16c surround the combustion section 1 and are provided between the exterior IO and above, so that no matter from which part the combustion gas leaks from the combustion section 1, Temperature detection is the important part, that is,
This is because high-temperature combustion gas tends to rise upward and stay at the top. (Thermal fuse 16a 16b 1
6c is designed to turn off the main circuit of the device if it melts. ) FIG. 4 is shown in FIG. 3 assuming that the right side packing Al4 of the combustion section 1 has deteriorated.

This is an example of an experiment showing the state of temperature change in part A. The vertical axis of this graph indicates the temperature at part A, and the horizontal axis indicates the elapsed time from the start of combustion gas leakage. As is clear from this graph, the temperature of part A before leaking combustion gas is approximately 60°C.

When combustion gas leaks, the temperature suddenly begins to rise, and in the conventional case where a thermal fuse was not installed, the temperature rose to about 240°C, causing the temperature of the equipment and the surrounding area to rise to dangerous levels. As in the present invention, the thermal fuse 16c
If the temperature was set to 150°C, combustion gas would leak, and after about 4 minutes, the thermal fuse 16c would blow, stopping the equipment. When the equipment stops, the temperature suddenly drops, meaning that combustion gas no longer comes out, so the temperature of part A drops to 2.
,descend. Therefore, since the equipment itself is stopped before reaching a dangerous temperature, the safety of the equipment as well as the safety of the surroundings of the equipment can be ensured.In addition, in the present invention, three thermal fuses are described. Depending on the characteristics of the device,
You can increase or decrease the number. Also, set the temperature fuse to 15
Although the example of the present invention has been described at 0°C, it goes without saying that the set temperature may be varied depending on the characteristics of the equipment. Effects of the Invention As is clear from the above description of the embodiments, the present invention has the following advantages: By surrounding the combustion part in the upper part of the interior of the exterior and arranging the thermal fuse in the space between the back of the exterior and the ventilation openings on the left and right sides of the exterior,
Even if high-temperature combustion gas leaks from any part of the combustion section, one of the thermal fuses will blow, preventing an abnormal temperature rise inside the device, and especially protecting the control section. The effect is great. Furthermore, since the temperature of the equipment does not rise to an abnormal level, it is possible to make the equipment extremely safe, without causing any fire accidents that occur around the equipment, especially walls with combustible materials, as in conventional examples.

[Brief explanation of drawings]

FIG. 1 is a front view of the inside of an oil-burning appliance according to an embodiment of the present invention, FIG. 2 is a plan view of the same oil-burning appliance, and FIG. A detailed configuration diagram,
Fig. 4 is a temperature characteristic diagram of the temperature fuse installation part of the oil-burning appliance, Fig. 5 is a front view showing the inside of the conventional oil-burning appliance, Fig. 6 is a plan view of the oil-burning appliance, and Fig. 7. FIG. 2 is a detailed configuration diagram showing the combustion section of the combustion appliance. l... Combustion section, 1c... Heat exchanger, 1
0...exterior, l1...ventilation, 16a
, 16b, 16c... Temperature fuse.

Claims (2)

[Claims] (1) A combustion part that vaporizes fuel and supplies hot water using a heat exchanger; an exterior that surrounds this combustion part and has ventilation holes on the upper left and right sides; and a back part that includes fixing metal fittings that are attached to the building wall. An oil combustion appliance comprising: a thermal fuse arranged in a space between the rear surface of the exterior and the left and right side ventilation openings of the exterior, surrounding the combustion section in the upper part of the interior of the exterior. (2) The oil combustion appliance according to claim 1, wherein a thermal fuse is disposed in a selected portion of the upper part of the exterior where hot air from the combustion section accumulates.