JP6207966B2 - Burning cylinder of oil burning equipment - Google Patents

Description

  The present invention relates to a multi-cylinder type combustion cylinder used in an oil combustor such as an oil stove.

  Conventionally, this type has a structure of a combustion cylinder as shown in FIG. 2. However, when the heating capacity of this combustion cylinder is to be increased, the core guide outer cylinder 101, the core guide inner cylinder 102, In the secondary combustion chamber 105, the tip of the fuel core 103 provided so as to freely move up and down increases the amount of exposure that is exposed on the pan 104, and increases the amount of unburned gas generated from the fuel core 103. It is necessary to increase the height of the combustion ring 106 so that the chimney effect can be obtained even if the generated flame becomes large.

  In that case, the combustion cylinder flows in the secondary combustion chamber 105 from the secondary air hole 110 formed in the flame expansion plate support cylinder 109 erected in the upper part of the lid 108 at the upper end of the inner cylinder 107 by rising in the inner cylinder 107. Combustion air and combustion gas that rises between the inner cylinder 107 and the middle cylinder 111 with respect to the air, and a secondary combustion chamber that rises between the middle cylinder 111 and the glass outer cylinder 112 through the small hole 113 in the upper part of the middle cylinder 111. The combustion air flowing to 105 increases so that the balance of the combustion air is lost, the flame generated in the secondary combustion chamber 105 fluctuates, and the flame generated in the secondary combustion chamber 105 is at the upper end of the inner cylinder 107. There is a problem that a large amount of soot adheres to the flame expansion plate 114 when the temperature of the flame decreases in contact with the flame expansion plate 114 supported by the flame expansion plate support cylinder 109 erected on the lid 108. (For example, see Patent Document 1)

  Therefore, as shown in FIG. 3, the present applicant firstly increases the height of the inner cylinder 201 from the middle cylinder 202 and the glass outer cylinder 203, further increases the height of the combustion ring 204, and A combustion cylinder in which a secondary combustion chamber 205 is formed between the outside and the inside of the combustion ring 204 has been invented. (For example, see Patent Document 2)

JP 2003-336810 A JP 2009-180485 A

  By the way, in this conventional one, since the draft of the air rising in the inner cylinder becomes stronger, the air rising in the inner cylinder and passing through the secondary combustion chamber as it is and flowing outside the combustion cylinder increases. As a result, there has been a problem that the value of CO / CO2 of the exhaust gas is deteriorated.

In order to solve the above-mentioned problems, in claim 1 of the present invention, an inner cylinder and an inner cylinder having a large number of small holes, an outer glass outer cylinder, and an outer cylinder base on which the outer glass cylinder is placed. Further, the upper end of the glass outer cylinder is supported by an outer cylinder presser connected to the upper end of the middle cylinder, and a fuel core is positioned between the inner cylinder and the middle cylinder, and the primary between the inner cylinder and the middle cylinder. to form a combustion chamber, said inner cylinder upper end baffle spread to larger outside than the diameter of the inner cylinder at above the middle tube and the glass outer cylinder is supported on the lid provided on the further of the glass barrel The upper end is provided with a combustion ring erected higher than the flame expansion plate, and a secondary combustion chamber is formed by the outer side of the upper part of the inner cylinder and the inner side of the combustion ring. higher provided from the cylinder, the oil burner in which the upper end of the inner cylinder is provided in the height of a low height of the baffle from the upper end of the combustion ring retardant In the cylinder, provided with an upper rectifying plate formed with holes in said tubular inner upper, a middle rectifying plate formed with holes in said cylinder strategy central part is provided, the upper rectifying plate, the inner cylinder The middle rectifying plate is provided in the middle of the inner cylinder in the inner cylinder, and is provided at the boundary between the primary combustion chamber and the secondary combustion chamber .

According to the first aspect of the present invention, since the upper rectifying plate having the hole formed in the inner cylinder inner upper portion is provided and the middle rectifying plate having the hole formed in the substantially inner center portion of the inner cylinder is provided, The flow rate of the air flowing into the inner cylinder from the through hole in the upper surface of the core guide inner cylinder is reduced by the resistance of the middle rectifying plate provided in the substantially central portion of the inner cylinder, and a part of the air is rectified in the middle. It blows out from the small hole of the inner cylinder located near the lower part of the plate to the primary combustion chamber, accelerates the combustion of the primary combustion chamber , passes through the hole of the middle rectifying plate provided in the inner center of the inner cylinder The air rising in the inner cylinder is further decelerated by the resistance of the upper rectifying plate provided in the upper part inside the inner cylinder, and a part of the air is separated from the primary combustion chamber. From the small hole in the inner cylinder located near the boundary of the secondary combustion chamber, the boundary between the primary combustion chamber and the secondary combustion chamber Balloon in the primary combustion chamber and the secondary combustion chamber in the vicinity, thereby further promoting the combustion of the primary combustion chamber and secondary combustion chamber, in which it is possible to improve the value of CO / CO2 in the exhaust gas.

Furthermore, the height of the inner cylinder is higher than that of the middle cylinder and the glass outer cylinder, and the upper end of the inner cylinder is lower than the upper end of the combustion ring by the height of the flame expansion plate. Since the secondary combustion chamber is formed by the outside of the combustion ring and the inside of the combustion ring, the combustion air and the combustion gas rising between the inner cylinder and the middle cylinder, the middle cylinder and the glass are increased by increasing the height of the combustion ring. Even if the combustion air that rises between the outer cylinders and flows from the small hole at the top of the middle cylinder to the secondary combustion chamber increases, the inside of the inner cylinder rises and the small hole or inner The combustion air that flows into the secondary combustion chamber from the small holes formed in the upper peripheral surface of the cylinder also increases, so that the combustion air in the secondary combustion chamber is balanced and the flame generated in the secondary combustion chamber And the flame generated in the secondary combustion chamber does not come into contact with the flame expansion plate erected on the lid at the upper end of the inner cylinder. As a result, the flame temperature does not decrease, so that a large amount of soot does not adhere to the flame expansion plate, and the flame expansion plate that stands upright on the lid at the upper end of the inner cylinder and supports the flame expansion plate as in the prior art While eliminating the need for the support cylinder and reducing the number of parts, the primary combustion and the secondary combustion are always performed in one combustion cylinder, and complete combustion is always achieved. It can be used with peace of mind by preventing discharge.

Furthermore, the combustion cylinder has an upper rectifying plate in the inner cylinder positioned at the boundary between the primary combustion chamber and the secondary combustion chamber, that is, at almost the same height as the outer cylinder retainer. The primary combustion chamber near the boundary between the primary combustion chamber and the secondary combustion chamber from the small hole in the inner cylinder that is located near the boundary between the primary combustion chamber and the secondary combustion chamber due to the resistance of the upper rectifying plate And blow out into the secondary combustion chamber, so that complete combustion can be promoted.

1 is a cross-sectional view of a combustion cylinder with an embodiment of the present invention. Sectional drawing of the combustion cylinder which shows a prior art example. Sectional drawing of the combustion cylinder which shows another prior art example.

Next, a combustion cylinder of an oil burning appliance according to the present invention will be described with reference to an embodiment shown in the drawings.
1 is a core guide cylinder composed of a core guide outer cylinder 2 and a core guide inner cylinder 3 erected from the center of a fuel tank (not shown), and the upper ends of the core guide outer cylinder 2 and the core guide inner cylinder 3. Each has a step-like fire tray portion 4 and has a plurality of through holes 5 on the upper surface of the core guiding inner cylinder 3 for releasing air rising inward as combustion air.

A fuel core 6 is provided in the core guide cylinder 1 between the core guide outer cylinder 2 and the core guide inner cylinder 3 so as to be movable up and down, and its tip is exposed on the pan 4 when raised.
Reference numeral 7 denotes a support cylinder fixed to the outer periphery of the flame tray portion 4 of the core guide outer cylinder 2, and a flange portion 8 bent outward is formed at the upper end.

  9 is a cross pin 13 in which an inner cylinder 10 having a large number of small holes, an intermediate cylinder 11 having a large number of small holes on the outer side of the inner cylinder 10, an outer cylinder base 12 on the outer side of the inner cylinder 11, etc. The lower end of the inner cylinder 10 is placed on the pan 4 and the lower end of the middle cylinder 11 is placed on the pan 4, and is supported by the outer base 12. An air inflow interval 14 is provided between the flange portion 8 of the cylinder 7 and the inner cylinder 10 is built in the upper portion of the outer cylinder base 12 which is larger than the outer diameter of the middle cylinder 11. A through-hole 15 through which the middle cylinder 11 passes is formed. Air that has passed through the gap 14 flows into the gap 16 between the through-hole 15 and the middle cylinder 11, and further, the inner cylinder 10 and the middle cylinder 11 are separated from each other. A fuel core 6 is located between them, and this space is provided as a primary combustion chamber 17 on the core guide cylinder 1.

  The outer cylinder base 12 of the combustion cylinder 9 mounts and supports a glass outer cylinder 18 made of a heat-resistant heat-transmitting material having an outer diameter of 120 mm, a height of 130 mm and facing the upper portion of the middle cylinder 11.

  Further, the middle cylinder 11 uses a stainless steel plate having a diameter of 90 mm, a height of 190 mm, and a thickness of 0.2 to 0.6 mm. A large number of small holes 19 of ~ 2.0 mm are formed, and at the upper part which is at most ½ of the total length facing the upper glass outer cylinder 18, a horizontally long shape of 1.5 to 3.0 mm × 10 to 15 mm These small holes 20 are arranged in a staggered brick shape while partially polymerizing each other vertically, and the overall aperture ratio is 40 to 60%.

  Reference numeral 21 denotes an outer cylinder presser that closes the upper portion between the middle cylinder 11 and the glass outer cylinder 18, and fixes one end to the upper end of the middle cylinder 11 and extends the other end to the upper end of the glass outer cylinder 18. Between the middle cylinder 11 and the glass outer cylinder 18 that are supported by the upper cylinder holder 21 and are closed by the outer cylinder holder 21, vent holes 22 having a diameter of 3 mm are formed circumferentially at equal intervals. is there.

  The inner cylinder 10 is made of a stainless steel plate having a diameter of 65 mm, a height of 235 mm and a diameter of 0.3 to 0.8 mm. A plurality of small holes 23 having a diameter of 1.2 to 2.0 mm are formed on the entire circumference. Is tall and has an upper part protruding upward from the outer cylinder holder 21.

  The inner cylinder 10 is provided with a flame expansion plate 25 that is supported by a lid 24 provided at the upper end of the inner cylinder 10 and that is larger than the diameter of the inner cylinder 10 and smaller than the middle cylinder 11 and spreads outward. Further, a plurality of small holes 26 for supplying secondary combustion air from the inside of the inner cylinder 10 to the upper side of the lid body 24 are formed in the lid body 24.

  Reference numeral 27 denotes a cylindrical combustion ring provided outside the outer cylinder holder 21 so as to cover the flame expansion plate 25, and a locking part 29 formed on the upper surface of the outer cylinder holder 21 by three cut pieces 28 raised and raised. An appropriate gap 30 of 3 to 6 mm is formed between the outer cylinder holder 21 and the outer cylinder holder 21.

  The combustion ring 27 has a diameter of 130 mm and a height of 80 mm, and the upper part of the inner cylinder 10 is located substantially concentrically inside the combustion ring 27, and is a space formed by the inner side of the combustion ring 27 and the outer side of the upper part of the inner cylinder 10. As a result, the secondary combustion chamber 31 is formed, and the air rising on the outer periphery of the glass outer cylinder 18 is supplied as secondary air to the secondary combustion chamber 31 through the gap 30 to promote combustion.

  Reference numeral 32 denotes a plurality of vent holes provided at the front end portion of the flame spreader plate 25 at a position facing the fuel core 6. The circumferential portion of the flame spreader plate 25 is positioned directly above the fuel core 6. Since it becomes resistance to upward escape of unburned gas generated from the fuel core 6 at the time of fire extinguishing, by providing a vent 32 to prevent this, the unburned gas at the time of fire extinguishing is let out from here. It is intended to shorten time.

  Reference numeral 33 denotes a guide plate provided at the inner lower portion of the inner cylinder 10, and supplies combustion air flowing in from below to the primary combustion chamber 17 at the upper end of the fuel core 6 and supplies combustion air upward through a central opening 34. Is.

  Reference numeral 35 denotes a middle rectifying plate provided in the substantially central portion of the inner cylinder 10, and the combustion air that has been rectified by various hole portions 36 and has risen through the opening 34 of the guide plate 33 is supplied upward. Combustion air is supplied to a primary combustion chamber 17 between 10 and the middle cylinder 11.

  Reference numeral 37 denotes an upper flow straightening plate provided at the upper inner side of the inner cylinder 10, which rectifies in various hole portions 38 and supplies combustion air upward, and at the same time, a primary combustion chamber 17 between the central inner cylinder 10 and the middle cylinder 11. Combustion air is supplied to the.

Next, the operation of this embodiment will be described.
Now, if the fuel core 6 is ignited by a known ignition means (not shown), combustion starts in the primary combustion chamber 17 in the combustion cylinder 9, and this combustion occurs between the inner cylinder 10 and the inner cylinder 11. 10 is performed to the upper end, the brick-shaped small hole 20 portion from the lower part to the middle of the middle cylinder 11 is favorably red-heated, and this red heat state is directly or through the glass outer cylinder 18 or a reflector (not shown). The radiant heating is performed by the reflection.

  In addition, the combustion gas that has risen in the primary combustion chamber 17 while causing the middle cylinder 11 to heat red flows into the secondary combustion chamber 31 formed by the outer side of the upper part of the inner cylinder 10 and the inner side of the combustion ring 27, where a large space is formed. In addition, the rise is suppressed by the flame expansion plate 25, the flow velocity is slow, and the space between the middle cylinder 11 and the glass outer cylinder 18 is closed by the outer cylinder holder 21, but the middle cylinder 11 of the outer cylinder holder 21 is closed. Since the air holes 22 having a diameter of 3 mm are formed on the entire circumference in the portion located between the glass outer cylinder 18 and the glass outer cylinder 18, the air that has risen between them is formed as secondary air from the air holes 22. It is supplied to the secondary combustion chamber 31.

  Further, the air that has risen in the inner cylinder 10 from the small hole 26 of the lid body 24 is guided to the flame expansion plate 25, and the secondary air from above the secondary combustion chamber 31 is supplied. The air outside the combustion cylinder 9 is also supplied as the secondary air from the lower side to the upper side of the secondary combustion chamber 31 through the gap 30 of the combustion ring 27.

  At this time, the air that has flowed into the inner cylinder 10 from the through hole 5 on the upper surface of the core guide inner cylinder 3 rises in the inner cylinder 10, and first of all, the middle rectifying plate 35 provided in the substantially central portion inside the inner cylinder 10. The flow velocity is decelerated by the resistance, and a part of the air is blown out from the small hole 23 of the inner cylinder 10 located near the lower part of the middle rectifying plate 35 to the primary combustion chamber 17 to promote the combustion in the primary combustion chamber 17. Is.

  Furthermore, the air that passes through the hole 36 of the middle rectifying plate 35 provided at the substantially central portion of the inner cylinder 10 and rises in the inner cylinder 10 flows into the upper rectifying plate 37 provided at the inner upper portion of the inner cylinder 10. The flow velocity is further decelerated by the resistance, and the primary combustion chambers 17 and the secondary combustion chambers 17 and the secondary combustion chambers are formed from the small holes 23 of the inner cylinder 10 located near the boundary between the primary combustion chamber 17 and the secondary combustion chamber 31. Since the air is blown out to the primary combustion chamber 17 and the secondary combustion chamber 31 in the vicinity of the boundary of the secondary combustion chamber 31, the combustion in the primary combustion chamber 17 and the secondary combustion chamber 31 is further promoted.

  As a result, the combustion in the primary combustion chamber 17 and the secondary combustion chamber 31 approaches closer to complete combustion, and the inside of the secondary combustion chamber 31 passes through the small hole 26 formed above the lid 24 provided at the upper end of the inner cylinder 10. The amount of air that passes through the combustion cylinder 9 and decreases to the outside of the combustion cylinder 9 is reduced. As a result, the CO / CO2 value of the exhaust gas is the worst combustion state, which was 0.006 in the past, but in this case it has been improved to 0.005 In this case, the CO concentration can be reduced by 25% in the worst combustion state.

  Further, the height of the inner cylinder 10 is higher than that of the middle cylinder 11 and the glass outer cylinder 18, and the upper end thereof is lower than the upper end of the combustion ring 27 by the height of the flame expansion plate 25, that is, approximately 4 of the combustion ring 27. Since the height of the combustion ring 27 is increased by being positioned up to the third height of the minute, the combustion air and the combustion gas rising between the inner cylinder 10 and the middle cylinder 11, the middle cylinder 11 and the glass Even if the amount of combustion air that rises between the outer cylinders 18 and flows from the small holes 20 in the upper part of the middle cylinder 11 to the secondary combustion chamber 31 increases, the inside of the inner cylinder 10 rises to the lid 24 at the upper end of the inner cylinder 10. The amount of combustion air that flows from the formed small holes 26 and the small holes 23 formed in the entire upper peripheral surface of the inner cylinder 10 to the secondary combustion chamber 31 is increased, whereby the combustion air in the secondary combustion chamber 31 is increased. The flame generated in the secondary combustion chamber 31 does not fluctuate, and the secondary combustion chamber 3 Since the flame generated in the above does not come into contact with the flame expansion plate 25 standing on the lid 24 at the upper end of the inner cylinder 10, and the temperature of the flame does not decrease, a large amount of soot may adhere to the flame expansion plate 25. There is nothing.

  In the secondary combustion chamber 31, secondary air is supplied from the entire circumference so as to surround the secondary combustion chamber 31 in a large space formed by the inside of the combustion ring 27 and the outside of the upper portion of the inner cylinder 10. Mixing with the combustion gas is performed smoothly, so that complete combustion is always achieved with good combustion and no unburned gas is released into the room.

  Further, in the combustion cylinder 9 of the present case, the combustion gas passing from the primary combustion chamber 17 to the secondary combustion chamber 31 smoothly escapes to the upper end of the combustion ring 27 without being obstructed by the flame expansion plate 25. The flame is extinguished quickly.

  Further, in the combustion cylinder 9 of the present case, the upper rectifying plate 37 in the inner cylinder 10 is located at the boundary between the primary combustion chamber 17 and the secondary combustion chamber 31, that is, at substantially the same height as the outer cylinder presser 21. Combustion air that has risen in the inner cylinder 10 is primarily combusted from the small holes 23 of the inner cylinder 10 located near the boundary between the primary combustion chamber 17 and the secondary combustion chamber 31 due to the resistance of the upper rectifying plate 37. Since the air is blown out to the primary combustion chamber 17 and the secondary combustion chamber 31 near the boundary between the chamber 17 and the secondary combustion chamber 31, more complete combustion is promoted.

6 Combustion core 10 Inner cylinder 11 Middle cylinder 12 Outer cylinder base 17 Primary combustion chamber 18 Glass outer cylinder 21 Outer cylinder retainer 24 Lid 25 Flame expansion plate 27 Combustion ring 31 Secondary combustion chamber 35 Middle rectifying plate 37 Upper rectifying plate 36, 38 holes

Claims (1)

It consists of an inner cylinder and a middle cylinder with many small holes, an outer glass outer cylinder and an outer cylinder base on which the glass outer cylinder is placed, and the upper end of the glass outer cylinder is connected to the upper end of the middle cylinder. supported by the outer cylinder holding, to form the primary combustion chamber between the positions the燃芯the inner tube and the middle tube between the inner tube and the middle tube, the lid is in the inner cylinder upper Provided with a flame expansion plate that is supported above the middle cylinder and the glass outer cylinder and spread outwards larger than the diameter of the inner cylinder, and further provided with a combustion ring erected higher than the flame expansion plate at the upper end of the glass outer cylinder, A secondary combustion chamber is formed by the outer side of the upper portion of the inner cylinder and the inner side of the combustion ring, and the height of the inner cylinder is set higher than that of the middle cylinder and the glass outer cylinder, and the upper end of the inner cylinder is higher than the upper end of the combustion ring. in combustion cylinder oil burner provided in the height of a low height of the baffle, after having formed a hole in said tube inner upper Provided with a rectifying plate, together with the central rectifying plate formed with holes in said cylinder strategy central part is provided, the upper rectifying plate is in the inner cylinder is provided at the position of the boundary of the primary combustion chamber and a secondary combustion chamber The combustion cylinder of the oil burning instrument , wherein the middle rectifying plate is provided in the middle of the inner cylinder at a position intermediate the height of the inner cylinder.

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