JP2005273921A - Heat insulation structure of oil combustor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat insulation structure of an oil combustor capable of preventing the temperature of a leveler from rising by maintaining the inside of a frame body at a low temperature. <P>SOLUTION: A burner 3 is disposed at the center of a loading table 2, a heat exchanger 7 is installed at the upper part of a combustion chamber 6 continued to the burner 3, the leveler 4 is installed on the loading table 2 adjacent to the rear plate 1b and the side plates 1c of a frame body 1, and a fuel pump 5 feeding an oil fuel to the burner 3 is installed in the leveler 4. A rear reflector 8a positioned on the side and rear of the combustion chamber 6 and opening at the front center of the frame body 1 thereof is disposed in the frame body 1, and a bottom reflector 8b positioned at a connection part between the burner 3 and the combustion chamber 6 is installed at the lower part of the rear reflector 8a. A fan 9 for convection blowing an inside air from the upper part of the rear reflector 8a to the combustion chamber 6 and the heat exchanger 7 is assembled to the rear plate 1b of the frame body 1, and a wind direction plate 10 is installed to communicate between near the leveler 4 and the front of a part of the fan 9 for convection. Thus, an atmospheric temperature around the leveler 4 can be prevented from rising by blowing a part of the air from the fan 9 for convection to near the leveler 4 by the wind direction plate 10. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a heat shield structure of an oil combustor having a heat exchanger and performing forced convection.

  The fuel combusted in the oil combustor is supplied from the fuel tank to the leveler that is temporarily stored inside the product, sent to the burner by the fuel pump attached to the top of the leveler, and at the bottom of the burner where the combustion heat is high. Vaporized gas is generated and mixed with air sent from the combustion blower and burned.

  When the fuel is burned by the burner, high-temperature combustion gas is generated and discharged from the exhaust pipe to the outside through the combustion chamber and the heat exchanger continuous with the burner. Therefore, even if an oil combustor is used for a long period of time, there is no fear of indoor air contamination by combustion gas, and there is a feature that it is very hygienic.

  In addition, the combustion chamber connected to the burner is made of glass so that the flame can be seen, so it is also visually warm, and the semicircular reflector that surrounds the combustion chamber reflects the radiant heat. There is an effect to. Although the heat exchanger part has the largest surface area, it is easy to exchange heat with room air. However, since the combustion gas, which is the heat source itself, is discharged outside the room, thermal efficiency cannot be expected so much. Therefore, in order to promote heat exchange, air is sent to the heat exchanger and the combustion chamber by a convection fan to increase thermal efficiency.

  However, a certain degree of thermal efficiency can be obtained if air is blown to the high-temperature combustion gas path by the convection fan as in the above structure. However, since the reflector is located in front of the convection fan, the heat exchanged air is used for the product frame. There is a case where a phenomenon that the hot air after heat exchange stays in the body or the hot air after the heat exchange is blown onto the part may not be smoothly discharged out of the product, and the atmospheric temperature in the frame may rise.

  In particular, in the fireproof performance certified product and the model where the top plate is designed not to become hot, the heated air tends to rise, but with the heat shield installed to maintain the above performance, etc. Since it is enclosed, hot air cannot escape outside the frame, and the expected thermal efficiency may not be obtained. As a result, the temperature of the components in the product rises, and in particular, the temperature of the fuel temporarily stored in the leveler becomes a problem.

  The present invention solves the above-described problem. A burner 3 disposed in the center of a pedestal 2 constituting the frame 1, a leveler 4 for temporarily storing supplied petroleum fuel, and the petroleum fuel of the leveler 4 are burned. A horizontally long heat exchanger 7 extending horizontally along the lower side of the top plate 1a of the frame 1 is provided at the upper part of the combustion chamber 6 that is continuous immediately above the burner 3. In addition, a rear reflector 8a that is semicircular and covers the combustion chamber 6 is disposed in the frame 1 so that the center of the front surface of the frame 1 is opened at the side and rear of the combustion chamber 6, and further, After this, a bottom reflector 8b is provided that is attached to the lower part of the reflector 8a and is located at the continuous portion of the burner 3 and the combustion chamber 6. The rear reflector 8a and the bottom reflector 8b constitute the reflector 8, and Located behind the heat exchanger 7 and the combustion chamber 6, the indoor air is burned from the top of the rear reflector 8a. In the oil combustor in which the convection fan 9 for blowing air to the chamber 6 and the heat exchanger 7 is assembled to the back plate 1b of the frame 1, the leveler 4 is adjacent to the back plate 1b and the side plate 1c constituting the frame 1. An airflow direction plate 10 that is installed on the mounting table 2 and communicates between the vicinity of the leveler 4 and a part of the front of the convection fan 9 is attached to the back plate 1b of the frame body 1, and the wind of the convection fan 6 is A part of is directed to the leveler 4 by being guided by the wind direction plate 10.

  Further, a leveler hole 11 communicating with outside air is provided in the back plate 1b or the side plate 1c of the frame 1 adjacent to the leveler 4 installed on the mounting table 2, and the leveler 4 is provided with the back plate 1b and the side plate 1c of the frame 1. A sealing plate 12 having a height higher than that of the leveler 4 is disposed on the table 2 so that the wind sent from the wind direction plate 10 is stopped by the sealing plate 12 and released from the leveler hole 11. With this structure, it becomes possible to prevent the temperature of the fuel in the leveler 4 from rising.

  Further, a back space 13 having a substantially triangular prism shape is formed by the back plate 1b and the side plate 1c of the frame body 1 and the rear reflection plate 8a covering the combustion chamber 6 with an arc shape, and below the top plate 1a of the frame body 1. In the back space 13 above the leveler 4 which the horizontally long heat exchanger 7 extends sideways, an air guide plate 14 that divides the back space 13 into two parts is arranged. A part of the air guide plate 14 is configured to be blown above the leveler 4 and below the bottom reflector 8b, thereby preventing the ambient temperature from rising.

  In the present invention, since air that has just been generated by the convection fan 9 and has not been subjected to heat exchange is blown to the vicinity of the leveler 4 by the wind direction plate 10, an increase in the ambient temperature around the leveler 4 can be prevented. Combustion stabilized.

  Further, since the back plate 1b or the side plate 1c of the frame 1 adjacent to the leveler 4 is provided with the leveler hole 11 communicating with the outside air, the wind sent from the wind direction plate 10 is smoothly discharged outside through the periphery of the leveler 4. Became. Further, since the sealing plate 12 is provided so as to surround the leveler 4, the heat exchanged in the frame body 1 by the sealing plate 12 is prevented from flowing toward the leveler 4, and at the same time, radiant heat from the burner 3 is prevented. I was able to.

  In addition, since the air guide plate 14 that partitions the back space 13 formed at the rear of the reflector 8 into two parts is provided, the air that has been heat-exchanged by the heat exchanger 7 in the frame body 1 by the air guide plate 14 is rearranged. Since the indoor air blown by the convection fan 9 is directed directly above the leveler 4 by the air guide plate 14, the leveler 4 is lowered. Can be maintained at temperature. Moreover, since the air sent to the leveler 4 goes up the other back part space 13 through the lower part of the bottom reflecting plate 8b, the rise in the internal atmosphere temperature of the frame 1 can be prevented.

  This configuration will be described with reference to the drawings showing an embodiment. 1 is a frame of an oil combustor, 1b is a back plate of the frame 1, 1c is a side plate connected to both ends of the back plate 1b, and 2 is a frame 1 The back plate 1b and the side plate 1c are arranged upright from the table 2. 1a is a top plate of the frame 1, and this top plate 1a is attached to at least the upper ends of the back plate 1b and the side plate 1c, and the frame 1 has both side plates 1c, a back plate 1b, a table 2, and a top plate 1a. Is formed into a rectangular parallelepiped shape.

  3 is a burner disposed in the center of the pedestal 2 in the frame 1, 6 is a combustion chamber that is continuous immediately above the burner 3, and 7 is a heat exchanger that spreads horizontally attached to the upper portion of the combustion chamber 6. The exchanger 7 is arranged so as to spread laterally along the lower side of the top plate 1 a inside the frame 1. Reference numeral 15 denotes an exhaust pipe extending downward from the end of the heat exchanger 7, and 16 denotes an exhaust fan connected to the exhaust pipe 15 for discharging the combustion gas after heat exchange to the outside.

  The burner 3 of the embodiment is constituted by a pot type oil combustor, 17 is a pot constituting a vaporization part and a primary combustion part, 17a is an air hole opened in a side wall of the pot 17, 18 is a pot 3 inside. An installed wind tunnel, 19 is a combustion fan that supplies combustion air to the wind tunnel 18, and this combustion fan 19 sucks outdoor air and supplies it to the wind tunnel 18, and the air sent to the wind tunnel 18 is The air is supplied into the pot 17 through the air hole 17a.

  4 is a leveler installed on the mounting table 2 in the frame body, 5 is a fuel pump arranged on the leveler 4, 20 is a fuel pipe provided between the fuel pump 5 and the pot 17, and 21 is a tip of the fuel pipe 20. The nozzle 21 passes through the wind tunnel 18 and drops fuel on the bottom surface in the pot 17.

  Reference numeral 22 denotes an ignition heater for preheating the pot bottom face, and vaporizing and igniting the fuel, which is attached from the side wall of the pot 17 with a gap from the bottom face. Reference numeral 23 denotes an auxiliary member installed in the pot 17. The fuel is vaporized at the bottom of the pot 17 which is heated by the ignition heater 22 and combustion heat, and is mixed with the combustion air supplied from the air holes 17a and the auxiliary combustion member 23 while starting the initial combustion. It burns completely above 17.

  8a is a rear reflector that is covered with a semicircular shape so that the center of the front surface of the frame 1 is open, 8b is a bottom reflector that is positioned parallel to the mounting table 2 at the continuous portion of the combustion chamber 6 and the burner 3, and 8 is a rear reflector. The reflector 8 is composed of a plate 8a and a bottom reflector 8b. The reflector 8 is formed by assembling the bottom reflector 8b to the lower end of the rear reflector 8a. Reference numeral 9 denotes a convection fan attached to the back plate 1b of the frame body 1. The convection fan 9 blows air from the upper part of the rear reflector 8a to the heat exchanger 7 and the combustion chamber 6, and the heat-exchanged air Is discharged from the front of the frame 1 into the room.

  However, since the wind generated by the convection fan 9 hits various parts including the heat exchanger 7, it is difficult to go straight out of the frame 1, resulting in an adverse effect such as an increase in the ambient temperature inside the frame 1. I will. In particular, when the temperature of the fuel rises, the volatilization of the fuel starts and is dangerous. Therefore, it is necessary to prevent the temperature of the fuel, that is, the temperature of the leveler 4 from rising.

  In an embodiment of the invention that solves the above-mentioned problems, the leveler 4 is installed on the back plate 1b of the frame 1 and the mounting table 2 adjacent to the side plate 1c, and 10 is on the back plate 1b of the frame 1. It is a wind direction plate that is attached and connects the front part of the convection fan 9 to the vicinity of the leveler 4, and the wind direction plate 10 causes a part of the wind flow from the rear to the front of the product generated by the convection fan 9. It is characterized in that the wind changes toward the leveler 4 and the wind blows toward the leveler 4. The wind just generated by the convection fan 9 before heat exchange can be blown near the leveler 4 by the wind direction plate 10 to prevent the ambient temperature from rising.

  In another embodiment of the present invention, 11 is a leveler hole communicating with the outside air provided on the back plate 1b or side plate 1c of the frame 1 adjacent to the leveler 4, and 12 is the back plate 1b and side plate 1c of the frame 1 with the leveler 4. The leveler hole 11 is configured so that the wind sent from the wind direction plate 10 is smoothly discharged from the frame 1 after passing through the vicinity of the leveler 4. The air before the new heat exchange that is sent from the wind direction plate 10 is always present around La 4 and is maintained at a low temperature. Further, the blocking plate 12 prevents the heat-exchanged air that reaches the periphery of the leveler 4 from the inside of the frame body 1 from flowing into the leveler hole 11 and at the same time, prevents the radiant heat from the burner 3.

  Since the sealing plate 12 provided so as to surround the leveler 4 opens the upper surface of the space formed by the back plate 1b and the side plate 1c of the frame body 1, the air guided by the wind direction plate 10 enters the mounting table 2 near the leveler 4. It collides and is blocked by the blocking plate 12 and flows upward. At this time, if the blocking plate 12 is taller than the leveler 4, the entire leveler 4 can be made independent of the heat exchanged air in the frame 1, and the wind sent by the wind direction plate 10 acts more effectively. Decided to do.

  In still another embodiment of the present invention, reference numeral 13 denotes a back space having a substantially triangular prism shape formed by a back plate 1b and a side plate 1c of the frame body 1 and a rear reflector 8a which is arcuate and covers the combustion chamber 6. It is an air guide plate that divides the back space 13 above the leveler 4 into two upper and lower parts. When the indoor air sent by the convection fan 9 is sent to the space above the air guide plate 14, the heat exchanger above it The air is directed toward the air 7 and warm air after the heat exchange is sent to the front of the frame 1 beyond the upper end of the rear reflector 8a.

  When the indoor air sent by the convection fan 9 is sent to the back space 13 below the air guide plate 14, the air is not heat-exchanged by the heat exchanger 7, so the temperature is low. The back space 13 below the induction plate 14 and the components in the vicinity thereof are at a low temperature because the heat of the heat exchanger 7 is blocked by the air induction plate 14, and the air that can maintain this low temperature is directed toward the upper surface of the leveler 4. Since the leveler 4 is blown, air is induced not only from the wind direction plate 10 but also from the substantially triangular back space 13 so that a low temperature can be maintained.

  Further, since the outlet of the air from the back space 13 toward the leveler 4 is restricted, the frame passes through the lower part of the bottom reflecting plate 8b and rises to the other back space 13 and exceeds the upper end of the rear reflecting plate 8a. 1 is sent to the front of the frame 1, so that high-temperature air can no longer stay in the frame 1 and the inside of the frame 1 can be maintained at a low temperature, and heat exchange is promoted to improve thermal efficiency. It became.

  As described above, in the embodiment of the present invention, the exhaust cylinder 15 from which the combustion gas is exhausted from the heat exchanger 7 is disposed in the other back space 13 without the leveler 4 and is exhausted by the exhaust fan 16 installed on the mounting table 2. ing. For this reason, it is an effective means to arrange the attachment position of the convection fan 9 closer to the back space 13 where the exhaust pipe 15 is located than the center of the arc-shaped rear reflector 8a.

  That is, since the air guide plate 14 is attached to the back space 13 on the side where the exhaust cylinder 15 is not provided, the air flow behind the reflector plate 8 and in the frame 1 below the back is on the back portion on the air guide plate 14 side. The air is blown out from the upper end of the rear reflector 8a to the front of the frame 1 through the space 13 below the bottom reflector 8b and the back space 13 where the exhaust tube 15 is located. At this time, since the back space 13 with the exhaust tube 15 is radiated from the exhaust tube 15, if the attachment position of the convection fan 9 is on the back space 13 side with the exhaust tube 15, more low-temperature indoor air is present. Since it passes through the vicinity of the exhaust cylinder 15 and is sent to the front of the frame 1 over the upper end of the rear reflector 8a, the temperature inside the frame 1 can be kept lower.

1 is a partially cutaway front view of an oil combustor showing an embodiment of the present invention. It is a partially notched front view of the oil combustor which shows the other Example of this invention. It is a partially notched top view of the oil combustor which shows the other Example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Frame 1a Top plate 1b Back plate 1c Side plate 2 Stand 3 Burner 4 Leveler 5 Fuel pump 6 Combustion chamber 7 Heat exchanger 8 Reflector 8a Rear reflector 8b Bottom reflector 9 Convection fan 10 Wind direction plate 11 Leveler hole 12 Sealing Plate 13 Back space 14 Air guide plate

Claims (3)

A burner 3 disposed in the center of the pedestal 2 constituting the frame 1, a leveler 4 for temporarily storing the supplied petroleum fuel, and a fuel pump 5 for sending the petroleum fuel of the leveler 4 to the burner 3,
On the upper part of the combustion chamber 6 continuous immediately above the burner 3 is provided a horizontally long heat exchanger 7 that extends laterally along the lower side of the top plate 1a of the frame 1;
A rear reflector 8a that is semicircular and covers the combustion chamber 6 is disposed in the frame 1 so that the center of the front surface of the frame 1 is opened at the side and rear of the combustion chamber 6. A bottom reflector 8b is provided at the lower part of the rear reflector 8a and located at the continuous part of the burner 3 and the combustion chamber 6. The rear reflector 8a and the bottom reflector 8b constitute the reflector 8,
A convection fan 9 which is located behind the heat exchanger 7 and the combustion chamber 6 and blows indoor air from the upper part of the rear reflector 8a to the combustion chamber 6 and the heat exchanger 7 is provided on the back plate 1b of the frame 1. In the assembled oil combustor,
The leveler 4 is installed on a table 2 adjacent to the back plate 1b and the side plate 1c constituting the frame 1, and the wind direction communicates between the vicinity of the leveler 4 and the front of a part of the convection fan 9. Attach the plate 10 to the back plate 1b of the frame 1,
A part of the wind of the convection fan 9 is guided to the wind direction plate 10 and directed to the leveler 4.   The back plate 1b or the side plate 1c of the frame 1 adjacent to the leveler 4 installed on the mounting table 2 is provided with a leveler hole 11 communicating with the outside air, and the leveler 4 is connected to the back plate 1b of the frame 1 and the side plate 1c. A sealing plate 12 that is taller than the leveler 4 is disposed on the table 2 so as to surround it, and the wind sent from the wind direction plate 10 is stopped by the sealing plate 12 and released from the leveler hole 11. The heat shielding structure for an oil combustor according to claim 1. A back space 13 having a substantially triangular prism shape is formed by the back plate 1b and the side plate 1c of the frame body 1 and the rear reflection plate 8a covering the combustion chamber 6 in an arc shape,
In the back space 13 above the leveler 4 that the horizontally long heat exchanger 7 extending horizontally along the lower side of the top plate 1a of the frame body 1 is provided, an air guide plate 14 that divides the back space 13 into two vertically. Place and
3. The oil combustor according to claim 1, wherein a part of the wind of the convection fan 9 is blown by the air guide plate 14 above the leveler 4 and below the bottom reflector 8 b. Thermal insulation structure.

Images