JP2003042454A - Safety device for oil burner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide structure that a drip tray and a floor are maintained at a low temperature even if an oil burner is formed compact. SOLUTION: A flat oil tank 2 is situated on the drip tray 1, a combustion wick 6 is inserted through a gap between a wick inner cylinder 3 and a wick outer cylinder 4, and a burner 5 is situated at the upper parts of the wick inner cylinder 3 and the wick outer cylinder 4. A thermal insulation plate 10 is situated on the upper surface, fronting on the internal part of the wick inner cylinder 3, of the drip tray, and the temperature of the drip tray 1 is prevented from increasing by interrupting a radiation heat. An air induction part 7 formed that a front is opened and a side and a back are closed is formed between the drip tray 1 and an oil tank 2, a heat radiation part 10a of the thermal insulation plate 10 is situated in an air flow passage, running from a gap between the drip tray 1, formed by the air introduction part 7, and the oil tank 2 toward the internal space of the wick inner cylinder 3. By radiating the heat of the thermal insulation plate 10 by the radiation part 10a, the temperature of the thermal insulation plate 10 is lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety structure for an oil combustor which requires compactness.

[0002]

2. Description of the Related Art In a conventional vertical core type oil combustor, a flat oil tank is attached to a stand that also serves as a bottom plate of a frame body.
In the oil tank, a core inner cylinder extending continuously upward from the bottom plate and a core outer cylinder attached to the upper plate of the oil tank outside the core inner cylinder are arranged. A combustion wick, the lower part of which is immersed in the oil in the oil tank, is installed in the space between the inner and outer cylinders, and a burner is attached to the upper part of the inner and outer cylinders.

When the combustion wick protruding from the upper ends of the inner and outer cylinders to the burner is ignited, the fuel sucked up by the combustion wick is supplied with air rising inside the inner core and burns inside the burner. Start.

The table below the oil tank has a stand on the front side of the oil combustor which is low and the back side of the tank is high. The front side is opened between the stand and the oil tank, and the side and back portions are opened. The space that closes the space is used as an air guiding portion that introduces combustion air. The combustion air that has entered from the air guiding portion is supplied to the internal space of the core inner cylinder.

Most of the combustion heat generated from the burner goes upward, but the radiant heat generated from the heated burner is radiated from the inside of the core inner cylinder toward the mounting table, and the mounting table looking into the core inner tube is high. It becomes temperature. In this way, the table heated by the radiant heat raises the temperature of the floor surface on which the oil combustor is placed, and in a structure in which the back surface of the table comes into contact with the floor surface, the floor surface becomes an abnormally high temperature, which is not preferable for safety.

As a conventional example for solving this problem,
In order to increase the distance between the burner, which is the heat source, and the stand, the oil tank and stand are spaced apart from each other.Furthermore, the stand that heats up is floated without touching the floor surface, and the heat of the stand directly transfers to the floor. Do not implement the structure. There is also a conventional example in which a part of the stand is floated above the floor surface to form a space, and a communication part with the outside air is configured so that high temperature air does not stay in this space. Since a part of the hot air flows into the space between the table and the table, and a part of the hot air flows out from the communication part, the structure of keeping the floor temperature low is implemented.
(See Jitsukaihei 4-39610)

[0007]

Recently, there is a tendency for a petroleum combustor having a short height and a compact frame shape to be assembled, but the oil tank is connected to the burner through the inner and outer cylinders. Since narrowing the overall height and the space above the burner where the combustion gas rises affects combustion performance, it is common practice to reduce the distance between the oil tank and the table or the table and the floor. Has been done.

As the oil combustor is designed to be more compact by this method, the surface of the stand approaches the lower end of the inner core tube, and the radiant heat of the burner causes the surface of the stand to become hot. Further, in order to obtain a compact oil combustor, the space between the stand and the floor surface is narrowed, and the floor surface is heated by the temperature of the stand that has become high temperature, which causes a problem of raising the floor temperature.

Therefore, arranging the oil tank at a low position in order to obtain a compact oil combustor causes a new problem that the temperature of the floor surface rises. Therefore, the space between the oil tank and the floor surface is narrowed. There is a limit to this, and in order to safely build a compact combustor, it is necessary to prevent the floor temperature from rising.

[0010]

SUMMARY OF THE INVENTION The present invention is to solve the above-mentioned problems, and a flat oil tank 2 is mounted on a stand 1 of an oil combustor.
And a core inner cylinder 3 erected from the bottom plate 2a of the oil tank 2
The outer core 4 is attached to the upper plate 2b of the oil tank 2 outside of the core, and the burner 5 of the petroleum combustor is provided above the inner core 3 and the outer core 4, and the inner core 3 and the outer core 4 are provided. The bottom of the oil tank 2 is immersed in the oil in the oil tank 2, and the burner wick 6 with the upper end of the burner 5 is inserted into the gap between the oil tank 2 and the oil table 2. The front side is positioned low and the back side is positioned high, and an air guide portion 7 is provided between the stand 1 and the oil tank 2 to open the front and close the sides and back. Combustion air is placed on the front stand. Combustion air is supplied to the burner 5 from the gap between the oil tank 2 and the oil tank 2 by using the internal space of the core inner cylinder 3 as an air flow path, and the lower part of the oil tank 2 bulges upward due to the contact with the floor surface 8. In a petroleum combustor in which a space 9 for communicating with the outside air is formed in a space A between the table 1 and the floor 8, the table 1
The heat shield plate 10 is disposed on the upper surface of the core inner cylinder 3 that faces the inside of the core inner cylinder 3, and the heat shield plate 10 is provided in the air flow path from the front side of the oil combustor to the inside of the core inner cylinder 3 passing below the oil tank 2. Heat dissipation part 1
0a is formed.

Further, the heat dissipation portion 10a formed on the heat shield plate 10
Is constructed by cutting and raising using a part of the heat shield plate 10,
The heat dissipating portion 10a is located below the oil combustor of the inner core cylinder 3 on the front side thereof, and the heat dissipating portion 10a is arranged along the air flow toward the inner core cylinder 3.
Since the flat portion a is configured, the heat of the heat shield plate 10 can be efficiently radiated without hindering the flow of air.

Further, the communication portion 9 in which the space A between the stand 1 and the floor 8 communicates with the outside air is located in the space between the stand 1 and the oil tank 2 whose sides and back are closed by the air guide 7. It is composed of an opening 9a formed in the table 1 and an opening 9b provided in the table 1 outside the air guiding portion 7, and is configured to discharge the high temperature air in the space between the table 1 and the floor 8. , The floor temperature can be lowered more efficiently.

[0013]

In the present invention, since the heat shield plate 10 is arranged on the upper surface of the mounting table 1 looking into the inner core tube 3, the inner core tube 3 of the mounting table 1 is arranged.
Even if the heat of the burner 5 passes through the inside of the inner core tube 3 as direct radiant heat toward the upper surface looking into the inside, this heat is blocked by the heat shield plate 10 without directly heating the surface of the stand 1. It was possible to lower the temperature of the part of the entire upper surface of the table 1 that was heated to a particularly high temperature.

Further, the core inner cylinder 3 passes below the oil tank 2 from the front side of the petroleum combustor formed by the air guide portion 7.
Since the heat radiating portion 10a of the heat shield plate 10 is arranged in the air flow path toward the inside of the combustion chamber, the combustion air heading to the burner 5 cools the heat radiating part 10a located in the air flow path with an air flow, and the heat is shielded by heat conduction. Lower the temperature of the plate 10.

Therefore, the heat shield plate 10 arranged on the upper surface of the table 1 looking into the inner core tube 3 prevents the temperature of the table 1 heated by the radiant heat of the burner 5 from rising and, in addition, at a high temperature. The amount of heat of the heat shield plate 10 is radiated from the heat radiating portion 10a formed in the air flow path to the air flow toward the burner, so that the temperature rise of the heat shield plate 10 is prevented. The table 1 is not heated strongly.

Further, the space formed between the table 1 and the floor 8 communicates with the outside air by the communication part 9 and air does not come in and out to form a closed state.
The temperature of the floor surface 8 can be kept low even if the oil combustor is used for a long time because the air temperature in the space A does not rise due to the air diffusing outside.

Since the heat radiating portion 10a formed on the heat shield plate 10 is formed by cutting and raising using a part of the heat shield plate 10, a part of the heat shield plate 10 becomes the heat radiating portion 10a, so that the heat of the table 1 is heated. Reliably transfers heat to the heat dissipation portion 10a,
It was possible to keep the temperature of the stand 1 low by being cooled by a.

Since the heat radiating portion 10a constituted by the cut-and-raised parts is positioned below the core inner cylinder 3 on the front side of the oil combustor, it passes through the lower side of the oil tank 2 from the front side of the oil combustor to the core inner cylinder 3. The heat radiating portion 10a is directly exposed to the air flow directed to the inside, and moreover, the cooling effect can be obtained because the air flow is located faster on the inlet side of the air flow path.

Further, the heat radiating portion 10a formed by cutting and raising.
Since the cut-and-raised flat portion is formed along the air flow toward the in-core cylinder 3, the flow of the combustion air is not hindered.

Further, the communication portion 9 in which the space A between the stand 1 and the floor 8 communicates with the outside air is located in the space between the stand 1 and the oil tank 2 whose sides and back are closed by the air guide 7. By configuring the opening 9a formed in the table 1 and the opening 9b provided in the table 1 outside the air guide portion 7, the high temperature of the space A between the table 1 below the oil tank 2 and the floor 8 can be maintained. The discharged air can be discharged smoothly.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the drawings showing embodiments. 11 is a frame body of an oil combustor, 1 is a mount on which the frame 1 is mounted, 1a is a frame formed by cutting and raising a plurality of places of the mount 1. 11 is a mounting piece for mounting the frame 11 on the mounting piece 1a.
It is fixed to the stand 1 by screwing it on.

Reference numeral 2 is a flat oil tank arranged on the table 1, 2a is a bottom plate of the oil tank 2, 2b is an upper plate of the oil tank 2, and the table 1 below the oil tank 2 is oil. The combustor is provided so that the front side is low and the back side is high.

Reference numeral 3 designates a core inner cylinder standing upright from the bottom plate 2a of the oil tank 2, and 4 designates a core outer cylinder mounted on the upper plate 2b of the oil tank 2.
Is a burner provided above the inner core cylinder 3 and the outer core cylinder 4, 6 is a combustion core mounted in the gap between the inner core cylinder 3 and the outer core cylinder 4, and 12 is a core upper and lower knob for performing core up and down operation. When the upper and lower knobs 12 of the wick project the upper end of the combustion wick 6 to the burner 5 and ignite, combustion air rises in the internal space of the wick inner cylinder 3 and is supplied to the burner 5, and is sucked up by the combustion wick 6. The fuel in the oil tank 2 starts burning inside the burner 5.

Reference numeral 7 is an air guide portion formed so that the front side is opened between the stand 1 and the oil tank 2 and the side portion and the back portion are closed, and the air guide portion 7 allows the oil tank from the front side of the oil combustor. An air flow path is formed that passes below 2 to the inner space of the core inner cylinder 3.

In the above structure, most of the combustion heat generated from the burner 5 is directed upward during combustion, but the radiant heat generated from the heated burner 5 is radiated from the inner space of the core inner cylinder 3 toward the stand 1. However, since the table 1 overlooking the inner core tube 3 is likely to have a high temperature, the distance between the table 1 and the oil tank 2 is widened to increase the distance between the burner 5 as a heat source and the table 1.

Reference numeral 8 is a floor surface on which an oil combustor is placed. The floor surface 8 is raised in temperature by the table 1 heated by the radiant heat of the burner 5, and the back surface of the table 1 contacts the floor surface 8. Since the floor surface 8 has an abnormally high temperature and is unfavorable for safety if it has a structure, measures are taken to prevent the temperature of the floor surface 8 from being raised.

In FIG. 3 showing a conventional example, A is a space formed by floating a part of the back surface of the stand 1 and the floor surface, and 9
Is a communication part provided on the table 1 for communicating the space A with the outside air, and 9
c is an air flow gap formed by floating a part of the table 1 in contact with the floor 8 and 9d is a mounting piece 1 provided on the table 1.
The communicating portion 9 is an opening formed by a cut-and-raised hole of a, and the communicating portion 9 is constituted by an air circulation gap 9c and an opening 9d.

During combustion, the outside air flows into the space A from the air circulation gap 9c, and a part of the air in the space A, which has reached a high temperature, flows out from the opening 9d, so that the air temperature in the space A can be kept low. This prevents the temperature of the floor surface 8 from rising.

By the way, a recent petroleum combustor is preferred to be a compact design with a short height of the frame 11 from the viewpoint of easy handling and energy saving, such as the oil tank 2 to the inner core 3 and the outer core. Since the height reaching the burner 5 via the cylinder 4 and narrowing the space between the upper part of the burner 5 where the combustion gas rises and the upper surface of the frame 11 affect the combustion performance, the space between the stand 1 and the oil tank 2 is affected. Or the space between the table 1 and the floor 8 is narrowed.

However, when the space between the stand 1 and the oil tank 2 is narrowed, the surface of the stand 1 approaches the lower end of the inner core tube 3, and the radiant heat of the burner 5 raises the temperature of the surface of the stand 1. Since it becomes easier, the range in which the distance between the stand 1 and the oil tank 2 can be narrowed is limited.

If an attempt is made to narrow the space between the stand 1 and the floor 8 in order to obtain a more compact oil combustor, the amount of air in the space A becomes smaller and the air is easily heated, and the temperature of the floor 8 increases. However, in order to prevent the temperature of the floor surface 8 from rising, there is a limit to narrowing the space between the stand 1 and the floor surface 8, and a safe and compact oil combustor is constructed. It was difficult.

The present invention solves the above problems and provides a safe and compact petroleum combustor.
A heat shield plate mounted on the upper surface of the core inner tube 3
Reference numeral a denotes a heat radiating portion of the heat shield plate 10 arranged in an air flow path from the front side of the oil combustor to the inside of the core inner cylinder 3 from the front side of the oil combustor by the air guiding portion 7.

Even if the radiant heat generated by the burner 5 during combustion is radiated from the inner space of the core inner cylinder 3 toward the upper surface of the stand 1, this heat is blocked by the heat shield plate 10 and directly on the surface of the stand 1. Since there is no need to heat, it is possible to suppress the temperature rise of the part of the entire upper surface of the mounting table 1 that has a particularly high temperature.

Further, the heat shield plate 10 is heated by the radiant heat of the burner 5, but the heat radiating portion 1 arranged in the air flow path of the combustion air.
0a is cooled by the air flow from the air guiding section 7 toward the inner cylinder 3, and the temperature of the heat shield plate 10 can be lowered by the heat conduction of the cooled heat radiating section 10a, so that the table 1 is heated. In fact, the temperature can be kept low.

In this way, the burner 5 is heated by the heat shield plate 10.
Prevents the temperature rise of the table 1 heated by the radiant heat of
Since the heat quantity of the heat shield plate 10 which becomes high in temperature is radiated to the air flow heading to the burner 5 from the heat radiating portion 10a and the temperature rise of the heat shield plate 10 is prevented, the table 1 is not heated strongly and the floor surface is prevented. It has become possible to prevent the temperature rise of 8 as well, and the floor surface 8 can be kept at a low temperature even if the space between the stand 1 and the oil tank 2 is narrowed.

Further, if the heat radiating portion 10a is constructed by cutting and raising using a part of the heat insulating plate 10, a part of the heat insulating plate 10 becomes the heat radiating portion 10a, so that heat conduction is facilitated and the heat insulating plate 10 The heat can be surely radiated by the heat radiating portion 10a.

Further, when the space between the stand 1 and the oil tank 2 is narrowed to make the oil combustor compact, the air flowing from the front side of the oil combustor under the oil tank 2 to the inside of the core inner cylinder 3 Will flow faster.

In the present invention, since the heat radiating portion 10a is located below the core inner cylinder 3 on the front side of the petroleum combustor, the heat radiating portion 10a is formed.
Since a is directly exposed to the fast air flow toward the inside of the inner core tube 3, the cooling effect of the heat radiating portion 10a can be enhanced and the temperature can be lowered efficiently.

Further, since the heat radiating portion 10a is constructed so that the flat portion cut and raised from the heat shield plate 10 is along the air flow toward the inner core tube 3, it does not hinder the flow of combustion air.
Combustion air can be smoothly supplied to the burner 5.

Further, 9a is an opening formed in the stand 1 which is located in the space between the stand 1 and the oil tank 2 whose sides and backs are closed by the air guide 7, and 9b is provided on the stand 1 outside the air guide 7. The opening 9a and the opening 9b constitute a communication portion 9 that communicates the space A with the outside air.

Since a fast airflow toward the inner core tube 3 is formed in the air guide portion 7, the air in the space A is drawn in by the fast airflow and flows into the air guide portion 7 through the opening 9a. Air is replenished from the opening 9b into the space A having a reduced amount, and an air flow path is formed from the opening 9b into the space A toward the air guiding portion 7 from the opening 9a.

For this reason, the air in the portion of the space A that is most likely to reach the highest temperature is easily discharged, so that the table 1 and the floor 8 are easily discharged.
Even if the distance between and is narrowed, the temperature of the air in the space A can be kept low and the temperature rise of the floor surface 8 can be prevented,
It became possible to realize a safe and compact oil combustor.

Further, a piece of paper such as an envelope accidentally enters the gap between the stand 1 and the oil tank 2 from the front side of the oil combustor, and the piece of paper forms the lower end surface of the inner core tube 3 forming an air flow path. If the air is blocked, the combustion air may not be supplied to the burner 5 and abnormal combustion may occur. However, in the present invention, the heat radiation portion 10a of the heat shield plate 10 is arranged so as to be seen through the inner core tube 3. Therefore, the paper piece is not stopped by the heat radiating portion 10a and the lower end surface of the inner core tube 3 is not blocked, and it is possible to cope with such an unexpected situation.

[0044]

As described above, according to the present invention, the heat shield plate 10 is arranged on the upper surface of the mounting table 1 which faces the inside of the core inner cylinder 3 to shield the radiant heat of the burner 5 passing through the inside of the core inner cylinder 3. Since the plate 10 is shielded so that the surface of the stand 1 is not directly heated, it is possible to suppress the temperature rise of the stand 1 in the portion most susceptible to the heat of the burner 5.

Further, the core inner cylinder 3 passes below the oil tank 2 from the front side of the petroleum combustor formed by the air guide portion 7.
Since the heat dissipation part 10a of the heat shield plate 10 is arranged in the air flow path toward the inside of the heat shield plate 10 and the temperature of the heat shield plate 10 is lowered by heat conduction of the heat dissipation part 10a cooled by the air flow toward the burner 5,
The temperature rise of the heat shield plate 10 is prevented, and the table 1 is not heated strongly.

Further, the space A between the table 1 and the floor 8 is communicated with the outside air by the communication part 9, and the communication part 9 is in communication during combustion.
Since the air flows in and out to diffuse the air in the space A to the outside, the temperature rise of the air in the space A can be suppressed, and the temperature of the floor 8 can be kept low even if the oil combustor is used for a long time. It became possible to do.

Therefore, even if the space between the table 1 and the oil tank 2 is narrowed or the space between the table 1 and the floor surface 8 is narrowed, there is no risk of the table 1 or the floor surface 8 becoming extremely hot. It became possible to make the oil combustor compact.

Further, the heat dissipation portion 10a formed on the heat shield plate 10
If the heat shield plate 10 is configured by cutting and raising using a part of the heat shield plate 10, the increase in the number of components can be suppressed and the heat shield plate 10 can be easily attached, and part of the heat shield plate 10 serves as the heat dissipation portion 10a, which facilitates heat conduction. Become.

Further, if the gap between the stand 1 and the oil tank 2 becomes narrower, the flow of air at the inlet side of the air flow path becomes faster, so that the heat radiating portion 10a is located on the front side of the petroleum combustor and below the inner core tube 3. The heat of the heat shield plate 10 is efficiently dissipated from the heat dissipating portion 10a by being directly exposed to the air flow passing from the front side of the oil combustor under the oil tank 2 toward the inner cylinder 3 at the position. As a result, the temperature of the mounting table 1 can be reliably prevented from rising, so that the safety can be further enhanced.

Further, since the air in the space A between the table 1 and the floor 8 flows into the air guiding portion 7 through the opening 9a and the outside air flows into the space A through the opening 9b, the highest temperature in the space A is obtained. It is possible to discharge the air in the area where the space between the table 1 and the floor 8 is narrow, and the temperature of the air in the space A is kept low to prevent the temperature of the floor 8 from rising, so it is safe and compact. It became possible to provide a good oil combustor.

[Brief description of drawings]

FIG. 1 is a front view of an oil combustor showing an embodiment of the present invention.

FIG. 2 is a cross-sectional view of essential parts of the oil combustor shown in FIG.

FIG. 3 is a sectional view of an oil combustor showing a conventional example.

[Explanation of symbols]

1 table 2 oil tank 2a bottom plate 2b Upper plate 3 core inner cylinder 4-core outer cylinder 4a core top and bottom knobs 5 burners 6 Burning wick 7 Air induction part 8 floor 9 communication section 9a opening 9b opening 10 heat shield 10a Heat dissipation part

Claims (3)

[Claims] 1. A flat oil tank 2 on a stand 1 of an oil combustor.
And a core inner cylinder 3 erected from the bottom plate 2a of the oil tank 2
The outer core 4 is attached to the upper plate 2b of the oil tank 2 outside of the core, and the burner 5 of the petroleum combustor is provided above the inner core 3 and the outer core 4, and the inner core 3 and the outer core 4 are provided. The bottom of the oil tank 2 is immersed in the oil in the oil tank 2, and the burner wick 6 with the upper end of the burner 5 is inserted into the gap between the oil tank 2 and the oil table 2. The front side is positioned low and the back side is positioned high, and an air guide portion 7 is provided between the stand 1 and the oil tank 2 to open the front and close the sides and back. Combustion air is placed on the front stand. Combustion air is supplied to the burner 5 from the gap between the oil tank 2 and the oil tank 2 by using the internal space of the core inner cylinder 3 as an air flow path, and the lower part of the oil tank 2 bulges upward due to the contact with the floor surface 8. In the petroleum combustor in which the space A between the stand 1 and the floor 8 is formed with the communicating portion 9 with the outside air, the inside of the inner core tube 3 of the stand 1 The heat shield plate 10 is disposed on the upper surface of the heat shield plate 10, and the heat radiating portion 10a of the heat shield plate 10 is formed in the air flow path from the front side of the petroleum combustor to the inside of the core cylinder 3 through the lower portion of the oil tank 2. A safety device for an oil combustor characterized in that 2. The heat radiating portion 10a formed on the heat shield plate 10 is constituted by cutting and raising using a part of the heat shield plate 10, and the heat radiating portion 10a is located below the front side of the petroleum combustor of the core inner cylinder 3. The safety device for an oil combustor according to claim 1, characterized in that a flat portion of the heat radiating portion 10a is formed along the air flow toward the inner core cylinder 3. 3. A communication section 9 in which a space A between the table 1 and the floor 8 communicates with the outside air is located in the space between the table 1 and the oil tank 2 whose sides and back are closed by an air guide 7. Table 1
The safety device for a petroleum combustor according to claim 1, wherein the safety device comprises an opening 9a formed in the opening and an opening 9b provided in the stand 1 outside the air guiding portion 7.