JPH0989234A - Waste oil combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively use recovered waste oil as lights in a camp site, a bonfire at the entrance of a restaurant and others by a method wherein the waste oil is supplied to a wick and air is supplied to a combustion chamber to burn the waste oil. SOLUTION: Waste oil filtered by a filter 4 is supplied to a waste oil feeder 5. At this time, an overflow circulating device 6 is operated to keep the oil level in a vessel 17 of the waste oil feeder 5 constant and supply the waste oil to a combustion device 3 at a constant rate. The waste oil supplied is impregnated in a wick in the combustion device 3. To ignite the waste oil, a small amount of kerosine is impregnated into the wick and used as a pilot flame. On the other hand, secondary air is supplied into the combustion device 3 through an air pipe 15a by a secondary air supply device 7. The secondary air is supplied through two or more holes formed in an inner drum so that it swirls in a combustion chamber. Thus, the waste oil is burned completely.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste oil combustion apparatus that can effectively use recovered waste oil for lighting a campsite, a bonfire at a restaurant entrance, and the like.

[0002]

2. Description of the Related Art Waste oil such as tempura oil from households and cafeterias, and industrial waste oil such as machine oil and lubricating oil used in factories will be polluted in the environment such as rivers . Therefore, in recent years, solid agents have been added to solidify and then discarded, or waste oil is regenerated.

[0003]

However, there is a problem in that the disposal of used waste oil requires the cost of solid agents and the like. Further, in order to recycle the waste oil, there is a problem that a complicated treatment process of a plurality of stages has to be performed, which results in high treatment cost. Further, it has been attempted to recover waste oil and use it as fuel, but some waste oil has a high ignition point and contains a large amount of impurities, and thus has a technical problem of being difficult to burn. Further, there is a technical problem that black smoke and the like are generated at the time of combustion, which causes new environmental pollution.

The present invention has been made in order to solve the conventional problems, and provides a waste oil combustion device as a means for effectively utilizing the collected waste oil for lighting a campsite or a bonfire at a restaurant entrance. This is the purpose.

[0005]

In order to achieve the above object, a waste oil combustion apparatus according to the present invention is a waste oil combustion apparatus used for a lamp or a bonfire which uses waste oil as a fuel, and is an inner cylinder made of ceramics. A combustion chamber partitioned by
A hole formed in the inner cylinder for injecting combustion air into the combustion chamber from an oblique direction, a fire core made of a capillary noncombustible material that is installed substantially in the center of the combustion chamber and impregnated with waste oil, and It is basically configured to include an oil pipe whose tip is disposed substantially at the center of the fire core and which supplies waste oil to the fire core, and an air pipe which supplies air to the combustion chamber through the hole.

The waste oil combustion apparatus according to the present invention further comprises a waste oil filtration apparatus for filtering the waste oil supplied to the combustion chamber, a waste oil supply apparatus for supplying the filtered waste oil to the combustion chamber via the oil pipe, and the waste oil. An overflow recirculation device that holds the oil level in the supply device constant and temporarily stores excess waste oil, and a secondary air supply device that supplies air to the combustion chamber through the air pipe and the hole are provided. Desirable,
Further, it is preferable that the core is a core obtained by winding a ceramics yarn on a ceramics paper. Further, the upper surface of the combustion chamber is sealed with a lid, an extension pipe for bonfire is installed in the center of the lid, and a gas of waste oil generated by combustion heat of waste oil in the combustion chamber is attached to the tip of the extension pipe for bonfire. It is desirable to burn it in the part.

In the waste oil combustion apparatus according to the present invention having such a structure, the waste oil is supplied to the core, and the air from the secondary air supply apparatus swirls into the combustion chamber through the air pipe and the hole. The waste oil is completely burned because it is supplied to the combustion chamber. Particularly, by adopting a configuration in which the upper surface of the combustion chamber is hermetically closed by the lid and the bonfire extension pipe is installed in the center of the lid, the waste heat can be gasified by the combustion heat of the combustion chamber. Therefore, by igniting this gas, it can be used as a bonfire or the like.

Therefore, according to the present invention, since used waste oil can be incinerated by a simple device,
The cost burden is also reduced, and the gas generated during incineration can be used as bonfire.

[0009]

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a waste oil combustion device according to a first embodiment of the present invention. In the figure, a waste oil combustion device 1 includes a combustion unit 3 installed in a bonfire container 2 and the like,
A waste oil filtration device 4 for filtering the collected waste oil, a waste oil supply device 5 for supplying the filtered waste oil to the combustion unit 3, and an oil surface in the waste oil supply device 5 is kept constant to temporarily store excess waste oil. It is composed of an overflow recirculation device 6 and a secondary air supply device 7 for supplying air to the combustion section 3 in order to promote combustion of waste oil.

As shown in FIGS. 2 (a) and 2 (b), the bonfire container 2 is generally an inverted conical type equipped with a tripod base or a flame earthenware type with a fall prevention measure. A shape that matches the taste of the person or the landscape is appropriately selected.

As shown in FIG. 3, the combustion section 3 includes a combustion chamber 12 defined by an inner cylinder 11a made of refractory ceramics and an upper lid 11b made of ceramics. A fire core 1 made of capillary noncombustible material that is installed so that waste oil is easily vaporized.
3, an oil pipe 14 for supplying waste oil to the wick 13, the tip of which is arranged substantially in the center of the wick 13, and the combustion chamber 1
A plurality of holes 11c formed in the inner cylinder 11a in order to blow a sufficient amount of combustion air into the inside 2 from the oblique direction;
There is provided a double-cylindrical air box 15b for supplying air to the combustion chamber 12 in a spiral manner and an air pipe 15a for supplying air to the air box 15b. Note that the upper lid 11b may not be provided when simply performing the waste oil combustion process.

[0012] Furthermore, since the fire core 13 installed in the combustion chamber 12 has a large solidification and shrinkability due to heat in the fiber blanket, its oil absorption is lowered, and the ceramic paper alone has a low air permeability and is not easily mixed with combustion air. Since agitation tends to be inadequate, it is desirable to use a fire core in which ceramics yarn is wrapped around ceramics paper in order to maintain oil absorption and air permeability for a long time.

The waste oil filter 4 uses a filter material made of a porous ceramics body. The filter material is not limited to the ceramic body, and other filter materials made of various porous materials can be used. When these filter media are clogged with carbon or impurities or residues of waste oil, the filter media are heated and incinerated to be regenerated.

In the waste oil supply device 5 for supplying the filtered waste oil to the combustion section 3, as shown in FIG. 4, an oil surface slidable up and down is provided at the upper end of the overflow pipe 18 fixed to the container 17. An adjusting pipe 19 is attached.

By adjusting the height of the oil level adjusting pipe 19 up and down, when the oil level in the container 17 is higher than the height of the oil level adjusting pipe 19, excess waste oil is discharged from the overflow pipe 18. Overflow reflux device 6
And the height of the oil level in the container 17 is constantly maintained at the set value. Further, the waste oil for combustion is adjusted to be supplied from the oil pipe 14 attached to the container 17 to the combustion section 3.

The secondary air supply device 7 supplies secondary air from the compressor 7a to the inside of the combustion section 3 through the air pipe 15a, and in the middle of the air pipe 15a,
A safety device 16 having a needle valve or the like for shutting off the air supply or preventing backflow of a flame or the like in an emergency is installed.

As shown in FIG. 5, the overflow reflux device 6 includes a two-stage closed tank 31 for storing excess waste oil in the container 17, and a partition 31a for the two-stage closed tank 31.
In the container 17, the communication pipe 34 that connects the upper compartment 32 and the lower compartment 33, which are divided into the upper and lower parts, is communicated with the container 17 of the waste oil supply device 5 and the lower compartment 33 of the two-stage closed tank 31. The overflow pipe 18 for discharging the excess waste oil of the above to the lower compartment 33 and the container 17 and the upper compartment 32 of the two-stage closed tank 31 are communicated with each other, and the waste oil accumulated in the upper compartment 32 is returned to the container 17. The waste oil in the lower compartment 33 from the lower end of the return pipe 36 and the overflow pipe 18
The backflow prevention valve 37 is installed so as to close the opening so as not to backflow to the 7 side.

The structure of the opening at the lower end of the overflow pipe 18 will be described in more detail. The opening is closed by a check valve 37 suspended by a spring 38, and excess waste oil in the container 17 is removed from the overflow pipe. When flowing out from the upper part of 18, the check valve 37 is designed to open due to the weight of the waste oil.

A heater 39 is installed around the two-stage closed tank 31 for storing excess waste oil in the container 17, and the upper end surface of the reflux pipe 36 is located inside the container 17 of the oil level adjusting pipe 19. It is set so that it is always located above the upper end surface. The recirculation device 6 applies the principle of a water pump utilizing air pressure to recirculate the waste oil accumulated in the tank into the waste oil supply device 5.

Next, the operation of the waste oil combustion device thus constructed will be described. Impurities are removed by putting waste oil into a filtration device 4 having a filtration material made of a porous ceramics body and filtering it. Then, the waste oil filtered by the filtering device 4 is supplied to the waste oil supply device 5. At this time, the overflow recirculation device 6 operates so that the oil level in the container 17 of the waste oil supply device 5 is maintained constant.

That is, the excess waste oil of the waste oil supply device 5 flows out to the lower compartment 33 of the two-stage closed tank 31 through the overflow pipe 18. Then, when the outflow is stopped, the check valve 37 closes the opening of the overflow pipe 18 by the spring 38. In this way, by discharging the excess waste oil of the waste oil supply device 5 to the lower compartment 33 of the overflow recirculation device 6, the oil level in the container 17 of the waste oil supply device 5 can be made constant.

Further, when the oil level in the container 17 is lowered, it is detected by a detecting means (not shown) and the heater 39 is operated. When the lower compartment 33 is warmed by the heater 39, the air pressure in the lower compartment 33 rises, the waste oil in the lower compartment 33 flows out to the upper compartment 32, and the upper compartment 32 further.
As the air pressure in the container rises, the waste oil in the upper compartment 32
Reflux to 7. By the operation of the overflow reflux device 6 as described above, the oil level of the waste oil supply device 5 is always maintained constant. As a result, a fixed amount of waste oil is supplied as fuel from the waste oil supply device 5 to the combustion unit 3. Then, the supplied waste oil is impregnated into the fire core 13 of the combustion section 3. To ignite this waste oil, a small amount of kerosene is impregnated into the core 13, and the kerosene is ignited to the core.

On the other hand, from the compressor 7a to the air pipe 15
Secondary air is supplied by the secondary air supply device 7 into the combustion section 3 via a. The secondary air is supplied through the holes 11c formed in the inner cylinder 11a so that the combustion air swirls in the combustion chamber 12. In this way, the combustion chamber 1
Since the combustion air is supplied so as to swirl inside the waste oil 2, the waste oil burns completely.

When the combustion of the waste oil combustion apparatus is to be extinguished, the core 13 is covered to shut off the supply of oxygen, and the valve 14a of the oil pipe 14 for supplying the waste oil is closed to supply the fuel. There is a system for shutting off, and an appropriate system suitable for the form of the combustion device in the waste oil combustion device 1 can be adopted.

When the waste oil combustion device is used as a bonfire or the like, as shown in FIG. 6, the upper surface of the combustion chamber 12 is sealed by the lid 20, and the central portion of the lid 20 is used for the bonfire. The extension pipe 21 is installed. That is, when the waste oil is burned in the combustion chamber 12, the waste oil is burned and the combustion heat thereof simultaneously causes the waste oil to be gasified, and the generated gas is guided to the bonfire extension pipe 21 and burned at the tip of the pipe 21. As a result, an appropriate flame can be obtained as a bonfire with high brightness and a long flame. The lid 20 that closes the upper surface of the combustion chamber 12 is preferably a ceramic body that is a refractory material.

Further, since bonfires are often installed outdoors, it is necessary to take measures against windbreaks and flame safety. Therefore, as shown in FIG. 7A, a windshield cover 22 may be attached to the upper end of the bonfire extension pipe 21. See also FIG.
As shown in (b), a burner tip 23 may be attached instead of the windshield cover 22.

Further, the windshield cover 22 and the burner tip 23 can be used as a heat source for flame misfire prevention as well as flame stabilization and windproof measures. That is, the windshield cover
Since the 22 and the burner tip 23 are heated to a certain temperature or higher, the heat can re-ignite the waste oil gas. Windshield cover 22, burner tip 23
Since the form of the flame is different between that for the windshield and that for the ceramics tip, it can be selected according to the application and preference. The arrows in FIGS. 6 and 7 indicate the flow of air.

As described above, when the gasification / combustion device 3 is used as a bonfire, the gas generated in the combustion chamber 12 is guided to an appropriate position by the extension pipe, and the secondary combustion is performed at the tip of the extension pipe. By doing so, it is possible to obtain a long bonfire with high brightness and a clean flame that is odorless and smokeless.

[0029]

As described in detail above, in the waste oil combustion apparatus according to claim 1 of the present invention, waste oil is supplied to the core.
Air from the secondary air supply device is supplied to the combustion chamber through the air pipe and the hole so as to swirl, so that the waste oil can be completely burned. Further, the waste oil combustion device according to claim 2 of the present invention can supply a certain amount of waste oil to the combustion chamber, and thus a stable flame can be obtained. A waste oil combustion device according to claim 3 of the present invention is
Because it can retain oil absorption and breathability for a long time,
A stable flame can be obtained for a long time. Furthermore, in the waste oil combustion apparatus according to claim 4 of the present invention, the upper surface of the combustion chamber is sealed with a lid, and an extension pipe for bonfire is installed in the central portion of the lid, whereby the combustion chamber Since the waste oil is gasified by the heat of combustion, by igniting this gas, it is possible to obtain a clean flame that is odorless and smokeless and that has a high brightness and a long flame.

As described above, according to the present invention, since the used waste oil is incinerated by a simple device, the cost burden is reduced, and the gas generated during incineration can be used as a bonfire or the like. It plays.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing a waste oil combustion device that is a first embodiment of the present invention.

2 (a) and 2 (b) are external explanatory views showing the shape of the bonfire container in FIG.

3 (a) is a longitudinal sectional view showing the structure of the combustion chamber in FIG. 1, and FIG. 3 (b) is an AA sectional view of FIG. 3 (a).

FIG. 4 is a conceptual diagram illustrating a waste oil supply device in FIG.

5 is a cross-sectional view of main parts for explaining the overflow reflux device in FIG.

FIG. 6 is a cross-sectional view of essential parts showing a case where the waste oil combustion device is used as a bonfire or the like.

7 (a) and 7 (b) are cross-sectional views of a main part showing a modified example when the waste oil combustion device is used as a bonfire or the like.

[Explanation of symbols]

 1 Waste Oil Combustion Device 2 Bonfire Container 3 Combustion Section 4 Waste Oil Filtration Device 5 Waste Oil Supply Device 6 Overflow Reflux Device 7 Secondary Air Supply Device 11a Inner Cylinder 11c Hole 12 Combustion Chamber 13 Fire Core 14 Oil Pipe 15a Air Pipe 15b Air Box 16 Safety device 17 Container 18 Overflow pipe 19 Oil level adjustment pipe 20 Lid 21 Extension pipe for bonfire 22 Windshield cover 23 Burner tip 31 Two-stage closed tank 32 Upper compartment 33 Lower keratin 34 Communication pipe 36 Reflux pipe 37 Backflow prevention valve 39 heater

Claims (4)

[Claims] 1. A waste oil combustion device used for lighting or bonfire using waste oil as a fuel, wherein a combustion chamber partitioned by an inner cylinder made of ceramics and for injecting combustion air into the combustion chamber from an oblique direction. A hole formed in the inner cylinder, a fire core made of a capillary noncombustible material which is installed substantially in the center of the combustion chamber and impregnated with waste oil, and a fire tip whose tip is arranged substantially at the center of the fire core. A waste oil combustion apparatus, comprising: an oil pipe for supplying waste oil to the chamber; and an air pipe for supplying air to the combustion chamber through the hole. 2. A waste oil filtration device for filtering waste oil supplied to the combustion chamber, a waste oil supply device for supplying the filtered waste oil to the combustion chamber via the oil pipe, and a constant oil level in the waste oil supply device. 2. An overflow recirculation device for temporarily storing excess waste oil held in the chamber and a secondary air supply device for supplying air to the combustion chamber through the air pipe and the hole. Waste oil combustion equipment. 3. The waste oil combustion apparatus according to claim 1, wherein the core made of the non-combustible capillary material is a core made of ceramic paper and ceramic yarn wound around the core. 4. The upper surface of the combustion chamber is sealed with a lid,
An extension pipe for bonfire is installed substantially in the center of the lid, and a gas of waste oil generated by combustion heat of waste oil in the combustion chamber is burned at a tip portion of the extension pipe for bonfire. The waste oil combustion device according to any one of claims 1 to 3.