JP2016075412A - Petroleum combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a petroleum combustion device in which combustion air supply can be sufficiently carried out from a core guide inner cylinder and influence of wind from above the core guide inner cylinder to downward direction can be eliminated.SOLUTION: A core 4 is arranged to be movable in an upward or downward direction and further at the upper end of the core guide inner cylinder 3 is provided with an inner cylinder cap 8 formed with a plurality of air supply holes. The upper surface end part of the inner cylinder cap 8 is installed with an inner cylinder 17 having several small holes and at the same time the upper end of the core guide outer cylinder 2 is installed with a middle cylinder 18 having several small holes. The outer periphery of the middle cylinder 18 is provided with the outer cylinder base 19, the core 4 is protruded between the inner cylinder 17 and the middle cylinder 18 to perform a combustion. The inner cylinder cap 8 is formed with a small clearance 11 where combustion air flows between it and the core guide inner cylinder 3 that is larger than several air supply holes at the central part while being formed at an entire circumference, and a flame preventive plate 10 of flat plate for shutting off back-fire reversing in the core guide inner cylinder 3 is suspended down in a horizontal direction in the core guide inner cylinder 3 and both sides of the flame preventive plate 10 are provided with recesses becoming the main flow passage of combustion air.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an oil combustion apparatus such as an oil stove.

  Conventionally, in this type of oil combustion apparatus, a flat plate is suspended from the inner cylinder cap via a support fitting, and guides the primary air into the air supply hole of the inner cylinder cap or the inside of the core guide. It became a windbreak and a current plate for the wind rising from the bottom of the cylinder, so that good combustion was obtained. (For example, refer to Patent Document 1.)

Japanese Utility Model Publication No. 49-27568

  By the way, in this conventional type, when a downward wind blows from above during combustion, the flame enters the core guide inner cylinder from the air supply hole of the inner cylinder gap, hits the flat plate, and the wall surface of the core guide inner cylinder By being guided to the side, this part is heated and there is a risk that the fuel core inside will burn out, and also about the primary air supplied from the inside of the core guide inner cylinder, Good rectification could not be performed, and the formed flame was disturbed.

  This invention pays attention to this point, and in order to solve the above-mentioned problem, in particular, the structure is provided with a fuel core that can move up and down between the core guide inner cylinder and the core guide outer cylinder, and further at the upper end of the core guide inner cylinder. An inner cylinder cap having a plurality of air supply holes formed in the center is provided, and an inner cylinder having a number of small holes is placed on the upper end of the inner cylinder cap, and an upper end of the core guide outer cylinder An inner cylinder having a large number of small holes is placed, an outer cylinder base is provided on the outer circumference of the inner cylinder, and a fuel core is projected between the inner cylinder and the inner cylinder to burn the inner cylinder. The cap has a larger diameter than the plurality of air supply holes at the center, and forms a small gap around the entire circumference of the core guide inner cylinder while flowing through the core guide inner cylinder. A flat flameproof plate that blocks backfire is suspended horizontally in the core guide inner cylinder, and further, notches are formed on both sides of the flameproof plate as main flow passages for combustion air. Those digits.

  As described above, according to the present invention, when a downward wind blows from above during combustion, the flame enters the core guide inner cylinder from the plurality of air supply holes of the inner cylinder gap, but the flame is flameproof. It is blocked by the plate and prevents further lowering, and the inner wall of the core guide inner cylinder is heated to prevent burning of the fuel core and abnormal combustion caused by this. Since combustion air rises from the notch and is supplied to the combustion section, good combustion can always be obtained even if a flameproof plate is provided in the core guide inner cylinder.

BRIEF DESCRIPTION OF THE DRAWINGS The principal part sectional drawing of the oil combustion apparatus which attached one Embodiment of this invention. The top view of the same inner cylinder cap. The side view of the inner cylinder cap and a flame-proof board. The bottom view of the inner cylinder cap and a flame-proof board.

Next, an embodiment of the present invention will be described with reference to 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). A fuel core 4 is provided between them so as to be movable up and down, and an inner cylinder having an air supply hole 7 having a large hole 5 at the center and a plurality of small holes 6 around it at the upper end of the core guide inner cylinder 3. A cap 8 is provided, and stepped fire tray portions 9 are respectively formed on the outer peripheral ends of the inner cylinder cap 8 and the core guiding outer cylinder 2.

  10 is a larger diameter than the plurality of air supply holes 7 in the central portion of the inner cylinder cap 8 and shields the air supply holes 7, and a small gap 11 through which combustion air circulates between the core guide inner cylinder 3. A flat flameproof plate that blocks backfire that flows back through the core guide inner cylinder 3 while being formed on the entire circumference, and is supported by the two support legs 12 from the inner cylinder cap 8 in the core guide inner cylinder 3. The flameproof plate 10 is provided with a notch 13 that is a main flow passage for combustion air.

  Reference numeral 14 denotes a support cylinder fixed to the outer periphery of the baffle portion 9 of the core guide outer cylinder 2, and a flange portion 15 bent outward is formed at the upper end.

  Reference numeral 16 denotes an inner cylinder 17 having a large number of small holes, a middle cylinder 18 having a large number of small holes outside the inner cylinder 17, an outer cylinder base 19 outside the middle cylinder 18, etc. The lower end of the inner cylinder 17 is placed on the pan portion 9 and the lower end of the middle tube 18 is placed on the pan portion 9 to support the outer tube base 19. A space 21 for inflow of air is provided between the cylinder 14 and the flange portion 15, and the upper portion of the outer cylinder base 19 is larger than the outer diameter of the middle cylinder 18, and the inner cylinder 17 is built in. A through hole 22 through which the cylinder 18 passes is formed, and air that has passed through the gap 21 flows into the gap 23 between the through hole 22 and the middle cylinder 18, and further between the inner cylinder 17 and the middle cylinder 18. In this, the fuel core 4 is positioned, and the space between the fuel cores 4 is provided as the primary combustion chamber 24 on the core guide tube 1.

  The outer cylinder base 19 of the combustion cylinder 16 is mounted with a glass outer cylinder 25 that is formed of a heat-resistant heat-transmitting material having an outer diameter of 120 mm, a height of 130 mm, and that opposes the upper portion of the middle cylinder 18. I support it.

  Further, the intermediate cylinder 18 is 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 26 of up to 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 25, is a horizontally long shape of 1.5 to 3.0 mm × 10 to 15 mm. These small holes 27 are arranged in a staggered brick shape while partially polymerizing each other vertically, and the overall aperture ratio is 40 to 60%.

  Reference numeral 28 denotes an outer cylinder presser that closes the upper portion between the middle cylinder 18 and the glass outer cylinder 25, and fixes one end to the upper end of the middle cylinder 18 and extends the other end to the upper end of the glass outer cylinder 25. Between the middle cylinder 18 and the glass outer cylinder 25, which supports the upper end and is closed by the outer cylinder presser 28, a vent hole 29 having a diameter of 3 mm is formed in a circumferential shape at equal intervals. is there.

  The inner cylinder 17 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 30 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 28.

  The inner cylinder 17 is provided with a flame expansion plate 32 which is supported by a lid 31 provided at the upper end of the inner cylinder 17 and which is larger than the diameter of the inner cylinder 17 and smaller than the middle cylinder 18 and spreads outward. Further, the lid 31 is formed with a plurality of small holes 33 for supplying secondary combustion air from the inside of the inner cylinder 17 to above the lid 31.

  Reference numeral 34 denotes a cylindrical combustion ring provided outside the outer cylinder holder 28 so as to cover the flame expansion plate 33, and a locking part 36 formed on the upper surface of the outer cylinder holder 28 with three attachment pieces 35 cut and raised. An appropriate gap 37 of 3 to 6 mm is formed between the outer cylinder holder 28 and the outer cylinder holder 28.

  The combustion ring 34 has a diameter of 130 mm and a height of 80 mm. The upper part of the inner cylinder 17 is located substantially concentrically inside the combustion ring 34, and is a space formed by the inner side of the combustion ring 34 and the outer side of the upper part of the inner cylinder 17. Thus, the secondary combustion chamber 38 is formed, and the air that has risen around the outer periphery of the glass outer cylinder 25 is supplied as secondary air to the secondary combustion chamber 38 through the gap 37 to promote combustion.

  Reference numeral 39 denotes a plurality of vent holes provided at the front end portion of the flame expansion plate 32 at a position facing the fuel core 4, and the circumferential portion of the flame expansion plate 32 is positioned directly above the fuel core 4. Since it becomes resistance to upward escape of unburned gas generated from the fuel core 4 at the time of fire extinguishing, by providing a vent hole 39 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 40 denotes a guide plate provided at the inner lower portion of the inner cylinder 17, and supplies combustion air flowing from below to the primary combustion chamber 24 at the upper end of the fuel core 4 and supplies combustion air upward through a central opening 41. Is.

  Reference numeral 42 denotes an air rectifying cylinder erected at the center of the inner cylinder cap 8, which has a plurality of rectification holes 43 on the peripheral wall, and the primary air flowing inward from the large hole 5 of the inner cylinder cap 8 is used as the rectification hole 43 on the peripheral wall. The air rectifying cylinder 42 protrudes upward from the opening 41 of the guide plate 40 so that the guide plate 40 can be connected to the air rectifying cylinder 42 even if the instrument body falls down. This also prevents the catching combustion cylinder 16 from dropping off the lead guide cylinder 1 and prevents ignition when the instrument falls.

Next, the operation of this embodiment will be described.
If the fuel core 4 is ignited by a well-known ignition means (not shown), combustion starts in the primary combustion chamber 24 in the combustion cylinder 16, and this combustion occurs between the inner cylinder 17 and the inner cylinder 18. By being performed up to the upper end, the brick-shaped small hole 27 portion from the lower part to the middle of the middle cylinder 18 is favorably red-heated, and this red-heated state is directly or via a glass outer cylinder 25 of a reflector (not shown). By reflection, radiant heating is performed.

  At this time, when the primary air rising from below in the core guide inner cylinder 3 comes near the upper inner cylinder cap 8, the primary air is trapped in the flameproof plate 10 in the core guide inner cylinder 3. There is a flameproof plate 10 that passes through the small gap 11 with the wall surface and the notch 13 that is the main flow passage, and is supplied from the air supply hole 7 of the inner cylinder cap 8 to the combustion section of the combustion cylinder 16. However, there is no hindrance to the supply of combustion from below the core guide inner cylinder 3, it is supplied smoothly through the small gap 11 and the notch 13, and good combustion can always be obtained. is there.

  Next, when a downward wind blows from above during combustion, the flame enters the core guide inner cylinder 3 from the air supply hole 7 of the inner cylinder cap 8, but the flame is shielded by the flat flameproof plate 10. Therefore, the inner wall of the core guide inner cylinder 3 is heated to prevent the fuel core 4 from being burned out or abnormally burned, and is always used with peace of mind.

DESCRIPTION OF SYMBOLS 1 core guide cylinder 2 core guide outer cylinder 3 core guide inner cylinder 4 fuel core 7 air supply hole 8 inner cylinder cap 10 flameproof plate 11 small gap 13 notch part 17 inner cylinder 18 middle cylinder 19 outer cylinder base

Claims (1)

  A fuel core is provided between the core guide inner cylinder and the core guide outer cylinder so as to be movable up and down, and an inner cylinder cap having a plurality of air supply holes formed in the center is provided at the upper end of the core guide inner cylinder. An inner cylinder having a large number of small holes is placed on the upper end of the cap, and an inner cylinder having a large number of small holes is placed on the upper end of the core guide outer cylinder. An inner cylinder cap is provided with a cylinder base, and a fuel core is projected between the inner cylinder and the middle cylinder to be burned. The inner cylinder cap has a diameter larger than a plurality of air supply holes in the center, and has a core guide inside. A flat flameproof plate that blocks backfire that flows backward in the core guide inner cylinder hangs horizontally in the core guide inner cylinder while forming a small gap around the cylinder around the circumference of the cylinder. In addition, the oil combustion apparatus is characterized in that a notch portion serving as a main flow passage for combustion air is provided on both sides of the flameproof plate.

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