Combustor

Abstract

To provide a combustor capable of suppressing influence due to wind against combustion.SOLUTION: A combustion machine comprises a combustion cylinder extending vertically, and a distribution plate arranged below the combustion cylinder and inside the combustion cylinder in a radial direction of the combustion cylinder, where the distribution plate has a regulation unit that regulates upward movement of air. Preferably, the regulation unit is inclined so as to descend as it moves from the outside to the inside in the radial direction. More preferably, the distribution plate comprises an inclination part that is arranged below the regulation unit and is inclined so as to ascend as it moves from the outside to the inside in the radial direction.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] This technology relates to combustion appliances that burn fuel and are used, for example, for heating or cooking. [Background technology]

[0002] A kerosene heater equipped with a wind-resistant plate has been proposed, which prevents abnormal combustion (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3010207 Summary of the Invention [Problem to be solved by the invention]

[0004] For example, when used outdoors, it is important to reduce the effect of wind on combustion.

[0005] The present disclosure has been made in consideration of the above circumstances, and has an object to provide a combustion unit that can suppress the effect of wind on combustion. [Means for solving the problem]

[0006] A combustion unit according to one embodiment of the present disclosure comprises a combustion tube extending vertically, and a baffle plate arranged below the combustion tube and inside the combustion tube in the radial direction of the combustion tube, and the baffle plate comprises a regulating portion that regulates the upward movement of air.

[0007] In the present disclosure, the restricting portion restricts the upward movement of air within the combustion cylinder.

[0008] In the combustor according to the embodiment of the present disclosure, the restriction portion is inclined so as to descend from the outer side to the inner side in the radial direction.

[0009] In the present disclosure, when air inside the combustion cylinder moves upward, the air hits the restriction portion and is guided radially outward of the combustion cylinder.

[0010] In the combustor according to one embodiment of the present disclosure, the straightening plate is disposed below the restricting portion and includes an inclined portion that is inclined so as to rise from the outer side toward the inner side in the radial direction.

[0011] In the present disclosure, air entering from the radially outer side of the combustion liner is guided to the upper side of the combustion liner by the inclined portion.

[0012] In a combustion unit according to one embodiment of the present disclosure, the inclined portion is arranged around the axis of the combustion tube, and the straightening plate includes a plurality of protruding plates that protrude upward from the inclined portion and are arranged to extend radially around the axis of the combustion tube.

[0013] In the present disclosure, one compartment is formed by two adjacent protruding plates and an inclined portion disposed between the two protruding plates, and a plurality of compartments are disposed in the circumferential direction of the combustion tube. The protruding plates prevent wind that has entered one compartment from invading an adjacent compartment.

[0014] In the combustor according to one embodiment of the present disclosure, the straightening plate includes five or more protruding plates.

[0015] In the present disclosure, five or more protruding plates are provided to limit the size of the section affected by the wind.

[0016] The combustion unit according to one embodiment of the present disclosure includes a bottom portion disposed below the straightening vane, and the angle between the inclined portion and the bottom portion is 35 degrees to 50 degrees.

[0017] In the present disclosure, the angle between the inclined portion and the bottom surface portion is set to 35 degrees to 50 degrees to optimize the intake of air into the combustion tube. Effect of the Invention

[0018] In the combustion unit according to the embodiment of the present disclosure, the restricting portion restricts the upward movement of air, which makes it possible to suppress wind from rising forcefully inside the combustion tube and causing combustion abnormalities, such as the flame going out. [Brief description of the drawings]

[0019] [Figure 1] FIG. 2 is a schematic perspective view of a combustion unit. [Diagram 2] FIG. 2 is a front view showing a simplified combustion unit; [Diagram 3] 3 is a partially enlarged right side cross-sectional view taken along line III-III shown in FIG. 2. [Figure 4] FIG. 4 is a perspective view illustrating a flow plate. [Diagram 5] FIG. [Figure 6] FIG. 4 is a partially enlarged right side cross-sectional view of the combustor, illustrating the configuration in the vicinity of a baffle plate. [Figure 7] FIG. 13 is a reference perspective view simply illustrating another straightening plate different from the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] The present invention will be described below with reference to the drawings showing a combustion unit 100 according to an embodiment. Fig. 1 is a perspective view showing the combustion unit 100, Fig. 2 is a front view showing the combustion unit 100, and Fig. 3 is a partially enlarged right side cross-sectional view taken along line III-III shown in Fig. 2. In the following description, the directions shown in the drawings are indicated as up, down, front, back, left and right. Note that up, down, front, back, left and right are used for ease of understanding and do not limit the scope of the invention.

[0021] The combustion device 100 includes a donut-shaped tank 1 with its axis extending vertically. Liquid fuel, for example, kerosene, is stored in the tank 1. As shown in FIG. 3, an inner cylinder 2 is inserted into the center of the tank 1. The inner cylinder 2 is arranged coaxially with the tank 1 and extends vertically. The upper part of the inner cylinder 2 has a larger diameter than the lower part. An annular top surface portion 2b that protrudes radially inward is formed at the upper end of the inner cylinder 2. A combustion cylinder 4 is inserted coaxially inside the inner cylinder 2. The combustion cylinder 4 protrudes upward beyond the top surface portion 2b. A plurality of holes 4b that penetrate in the radial direction are formed at the upper end of the combustion cylinder 4.

[0022] The inner cylinder 2 has a first bottom surface portion 2a having an annular shape extending radially inward. The combustion cylinder 4 has a second bottom surface portion 1a having an annular shape extending radially outward. The inner peripheral surface of the tank 1 has a third bottom surface portion 4a having an annular shape extending radially inward. The second bottom surface portion 1a is disposed below the first bottom surface portion 2a, and the third bottom surface portion 4a is disposed below the second bottom surface portion 1a (see FIG. 6). The first bottom surface portion 2a to the third bottom surface portion 4a are connected in a liquid-tight manner.

[0023] The inner cylinder 2 and the tank 1 are connected by a connecting pipe (not shown), and fuel is supplied from the tank 1 via the connecting pipe to the space between the inside of the inner cylinder 2 and the outside of the combustion cylinder 4. Since the first bottom surface portion 2a to the third bottom surface portion 4a are connected liquid-tightly, fuel does not leak from the space to the outside.

[0024] A wick guide tube 3 is coaxially disposed between the combustion tube 4 and the inner tube 2. A wick 3a is fixed inside the wick guide tube 3. The wick guide tube 3 can be moved up and down by a vertical movement mechanism 6. When the vertical movement mechanism 6 is driven, the wick 3a moves up and down together with the wick guide tube 3. The vertical movement mechanism 6 includes, for example, rack teeth formed on the wick guide tube 3 and extending up and down, and a pinion connected to the rack teeth.

[0025] The fuel moves from the lower side to the upper side of the wick 3a due to capillary action. The fuel vaporizes in the upper part of the combustion tube 4, enters the inside of the combustion tube 4 through the hole 4b at the upper end of the combustion tube 4, and burns inside the combustion tube 4. A wire mesh 9 is provided around the upper outer periphery of the combustion tube 4.

[0026] A dish-shaped bottom 5 is provided below the tank 1. An air passage 8 is formed between the bottom 5 and the tank 1. A straightening plate 10 is provided substantially directly below the combustion liner 4. The straightening plate 10 guides the air entering from the air passage 8 to the upper side of the combustion liner 4.

[0027] An annular lower connecting part 20a is disposed coaxially with the inner cylinder 2 above the top surface part 2b. The lower connecting part 20a is fixed to the inner cylinder 2, the tank 1, and the bottom part 5 via a connecting frame 27. An annular upper connecting part 20b is provided above the lower connecting part 20a. The upper connecting part 20b is rotatably connected to the lower connecting part 20a via a hinge 20c, and the upper connecting part 20b is locked to the lower connecting part 20a by a locking mechanism 20d. A cylindrical body 21 with the vertical direction as the axial direction is fixed to the upper connecting part 20b. A window 21a is provided on the front of the body 21. A top plate 22 is provided at the upper end of the body 21. A plurality of support parts 23 are provided on the periphery of the top plate 22. The support part 23 can support a kettle, a pot, or the like.

[0028] A safety fence 25 is provided on the outside of the body 21. The safety fence 25, the top plate 22, and the upper connecting portion 20b are connected by a connecting frame 24. A handle 26 is attached to the connecting frame 24.

[0029] An operating unit 7 is provided on the inner cylinder 2. The operating unit 7 is configured to be rotatable, and the vertical movement mechanism 6 is driven by rotating the operating unit 7. For example, the operating unit 7 includes a rotating shaft, and the pinion is provided on the rotating shaft. By rotating the operating unit 7, the rotating shaft and the pinion rotate, and the lead guide cylinder 3, which has rack teeth formed thereon, moves up and down, and the lead 3a moves up and down.

[0030] By releasing the lock of the lock mechanism 20d and rotating the upper connecting part 20b around the axis of the hinge 20c, the body 21 also rotates, exposing the upper end of the combustion tube 4. By bringing a fire close to the upper end of the combustion tube 4, the vaporized fuel ignites and combustion begins.

[0031] Fig. 4 is a perspective view showing the straightening vane 10, Fig. 5 is a plan view showing the straightening vane 10, and Fig. 6 is an enlarged partial right side cross-sectional view of the combustion unit 100 showing the configuration around the straightening vane 10. Arrows in Fig. 6 indicate the flow of air. The straightening vane 10 includes a first part 11 to a fifth part 15. The first part 11 to the fifth part 15 are arranged around the axis 40 of the combustion tube 4. The first part 11 is disposed at the front, and the first part 11 to the fifth part 15 are arranged clockwise in a plan view.

[0032] Although the first part 11 to the fifth part 15 have the same configuration, the first part 11 arranged at the front will be described below as a representative example. The part has an inclined part 30 inclined with respect to the bottom part 5. The inclined part 30 has an isosceles trapezoidal plate shape, and is arranged so that its lower base is located on the bottom part 5 side. In Fig. 6, θ1 indicates the angle of the inclined part 30. θ1 is preferably 35 degrees to 50 degrees, and more preferably 40 degrees to 45 degrees.

[0033] A first foot 31 and a second foot 32 are provided at both ends of the lower base of the inclined portion 30. The first foot 31 and the second foot 32 are configured to be plate-shaped and substantially parallel to the bottom portion 5. The first foot 31 is disposed on the right side, and the second foot 32 is disposed on the left side. The first foot 31 is provided with a first positioning plate 31a that protrudes upward. The first positioning plate 31a extends substantially parallel to the right leg of the inclined portion 30 in a plan view.

[0034] The second leg 32 is provided with a second positioning plate 32a that protrudes upward. The second positioning plate 32a includes a first plate portion 32b that extends in the left-right direction, and a second plate portion 32c that extends in the left front direction from the left end of the first plate portion 32b. The second plate portion 32c extends approximately parallel to the left leg of the inclined portion 30 in a plan view. A protruding plate 33 protrudes upward from the left leg of the inclined portion 30. The upper side of the protruding plate 33 extends approximately parallel to the bottom portion 5, and a convex portion 34 that protrudes upward is formed at the middle of the upper side.

[0035] A rectangular plate-shaped intermediate portion 35 extending in the left-right direction is provided on the upper base of the inclined portion 30. The intermediate portion 35 is approximately parallel to the axis 40 of the combustion tube 4. A connecting hole 35a is provided at the right end of the intermediate portion 35. A tongue portion 35b protruding to the left is provided on the left side of the intermediate portion 35. A rectangular plate-shaped restricting portion 36 extending in the left-right direction protrudes diagonally upward toward the front from the upper side of the intermediate portion 35. The restricting portion 36 is inclined with respect to the intermediate portion 35 so as to fall forward. The configurations of the second component 12 to the fifth component 15 are the same as those of the first component 11, and therefore detailed explanations thereof will be omitted.

[0036] As shown in Fig. 5, the five parts are arranged around the axis 40 of the combustion tube 4. As shown in Fig. 4, the tongue portion 35b of the first part 11 is inserted into the connecting hole 35a of the second part 12, the tongue portion 35b of the second part 12 is inserted into the connecting hole 35a of the third part 13, the tongue portion 35b of the third part 13 is inserted into the connecting hole 35a of the fourth part 14, the tongue portion 35b of the fourth part 14 is inserted into the connecting hole 35a of the fifth part 15, and the tongue portion 35b of the fifth part 15 is inserted into the connecting hole 35a of the first part 11. In this manner, the five parts are connected.

[0037] Further, the first positioning plate 31a of the first component 11 contacts the second plate portion 32c of the fifth component 15, and the first component 11 and the fifth component 15 are positioned. The first positioning plate 31a of the second component 12 contacts the second plate portion 32c of the first component 11, and the second component 12 and the first component 11 are positioned. The first positioning plate 31a of the third component 13 contacts the second plate portion 32c of the second component 12, and the third component 13 and the second component 12 are positioned. The first positioning plate 31a of the fourth component 14 contacts the second plate portion 32c of the third component 13, and the fourth component 14 and the third component 13 are positioned. The first positioning plate 31a of the fifth component 15 contacts the second plate portion 32c of the fourth component 14, and the fifth component 15 and the fourth component 14 are positioned.

[0038] As shown in FIG. 5 , the protruding plate 33 of the first part 11 is disposed along the right leg of the inclined portion 30 of the second part 12. The protruding plate 33 of the second part 12 is disposed along the right leg of the inclined portion 30 of the third part 13. The protruding plate 33 of the third part 13 is disposed along the right leg of the inclined portion 30 of the fourth part 14. The protruding plate 33 of the fourth part 14 is disposed along the right leg of the inclined portion 30 of the fifth part 15. The protruding plate 33 of the fifth part 15 is disposed along the right leg of the inclined portion 30 of the first part 11. That is, the multiple protruding plates 33 are disposed so as to extend radially around the axis 40 of the combustion tube 4.

[0039] As shown in FIG. 5, the angle θ2 between two adjacent protruding plates 33 around the axis 40 of the combustion cylinder 4 is approximately 72 degrees. That is, the phase intervals of the protruding plates 33 around the axis 40 of the combustion cylinder 4 are approximately the same, and the protruding plates 33 are arranged to extend radially around the axis 40 of the combustion cylinder 4. Each inclined portion 30 is sandwiched between two protruding plates 33. As shown in FIG. 4 and FIG. 5, each inclined portion 30 is inclined so as to rise from the outside toward the inside in the radial direction of the combustion cylinder 4. Each inclined portion 30 is arranged around the axis 40 of the combustion cylinder 4. Each restricting portion 36 is inclined so as to descend from the outside toward the inside in the radial direction of the combustion cylinder 4.

[0040] 5, in the straightening plate 10, one section (hereinafter also referred to as a first section) is formed by the protruding plate 33 of the first part 11, the protruding plate 33 of the fifth part 15, and the inclined portion 30 of the first part 11 arranged between the protruding plates 33 of the first part 11 and the fifth part 15. Also, one section (hereinafter also referred to as a second section) is formed by the protruding plate 33 of the second part 12, the protruding plate 33 of the first part 11, and the inclined portion 30 of the second part 12 arranged between the protruding plate 33 of the second part 12 and the protruding plates 33 of the first part 11. Also, one section (hereinafter also referred to as a third section) is formed by the protruding plate 33 of the third part 13, the protruding plate 33 of the second part 12, and the inclined portion 30 of the third part 13 arranged between the protruding plate 33 of the third part 13, the protruding plate 33 of the second part 12, and the protruding plates 33 of the third part 13 and the second part 12.

[0041] Moreover, one section (hereinafter also referred to as the fourth section) is formed by the protruding plate 33 of the fourth part 14, the protruding plate 33 of the third part 13, and the inclined portion 30 of the fourth part 14 arranged between the protruding plate 33 of the fourth part 14 and the protruding plate 33 of the third part 13. Moreover, one section (hereinafter also referred to as the fifth section) is formed by the protruding plate 33 of the fifth part 15, the protruding plate 33 of the fourth part 14, and the protruding plate 33 of the fifth part 15 and the protruding plate 33 of the fourth part 14.

[0042] As shown by the arrow in Fig. 6, a case will be described where wind (air) enters from the front side through the ventilation passage 8. As shown by the arrow in Fig. 6, the wind moves diagonally upward along the inclined portion 30, moves upward along the middle portion 35, hits the restricting portion 36 and is guided to the front side, i.e., the radially outer side of the combustion tube 4. By hitting the restricting portion 36, the force of the wind can be attenuated. The wind is guided by the restricting portion 36 to the radially outer side of the combustion tube 4, and moves to the upper side of the combustion tube 4.

[0043] In addition, the inclined portion 30 allows the wind to move smoothly upward and be guided to the upper side of the combustion liner 4. Therefore, combustion in the upper part of the combustion liner 4 is easily promoted.

[0044] Moreover, the upward movement of air is restricted by the restricting portion 36. Therefore, it is possible to restrict the wind from rising forcefully inside the combustion tube 4 and causing combustion abnormalities, such as the fire going out.

[0045] The wind that enters the air passage 8 reaches one of the first to fifth sections. The two adjacent protruding plates 33 make it difficult for the wind that reaches any section to invade the adjacent section. That is, the protruding plate 33 prevents the wind that enters one section from invading the adjacent section. For example, a strong wind that enters the first section is prevented from invading the second or fifth section. That is, the strong wind only enters the first section, and does not invade the second to fifth sections. Air enters the second to fifth sections due to natural convection generated by the combustion at the top of the combustion tube. In the case of natural convection, combustion abnormalities, such as the fire going out, are unlikely to occur. The influence of the strong wind can be limited to the first section. That is, by arranging multiple sections in the circumferential direction around the axis 40 in the straightening plate 10, even if a strong wind enters the air passage 8 from any direction, the influence of the strong wind can be minimized and the occurrence of combustion abnormalities can be suppressed.

[0046] By providing five protruding plates 33, the size of the compartment affected by the wind is limited. The number of protruding plates 33 may be six or more. By providing five or more protruding plates 33, the angle of θ2 becomes 72 degrees or less, making it easier to limit the size of the compartment affected by the wind. For example, when there are six protruding plates 33, the angle of θ2 becomes approximately 60 degrees. When the number of protruding plates 33 is four or less, the compartment affected by the wind becomes too large, and the fire is more likely to go out when a strong wind enters.

[0047] Moreover, by setting the angle θ1 of the inclined portion 30 to 35 degrees to 50 degrees, the intake of air into the combustion liner 4 can be optimized.

[0048] For comparison, another straightening plate different from the embodiment will be described. FIG. 7 is a reference perspective view showing another straightening plate different from the embodiment. The other straightening plate 300 includes a circular bottom plate 301 and a guide plate 302 that guides wind perpendicular to the bottom plate 301. When a strong wind enters the air passage 8, the strong wind hits the guide plate 302 at a substantially right angle. Since there is no inclined portion 30 as in the embodiment, a part of the strong wind that hits the guide plate 302 moves in the radial direction of the bottom plate 301 and does not move to the upper part of the combustion tube 4. That is, the air supply to the upper part of the combustion tube 4 becomes insufficient. In addition, since there is no regulating portion 36 as in the embodiment, the other part of the strong wind that hits the guide plate 302 rises vigorously inside the combustion tube 4 and extinguishes the fire. That is, a combustion abnormality occurs.

[0049] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is intended to include all modifications within the scope of the claims and the scope equivalent to the claims. The matters described in each embodiment can be combined with each other. In addition, the independent claims and dependent claims described in the claims can be combined with each other in all combinations regardless of the citation format. Furthermore, the claims use a format (multiple claim format) in which a claim cites two or more other claims, but this is not limited to this. A format in which a multiple claim (multi-multi claim) citing at least one multiple claim may be used. [Explanation of symbols]

[0050] 1 Tank 4 Combustion tube 5 Bottom 10 Rectifier plate 11 First Part 12 2nd Part 13 Third Part 14 4th part 15 5th part 30 Slope 33 Projecting plate 36 Regulatory Department 100 Combustion Machine

Claims

1. A combustion tube extending vertically; a straightening plate disposed below the combustion cylinder and on the inside of the combustion cylinder in the radial direction of the combustion cylinder; Equipped with The straightening plate has a restricting portion that restricts the upward movement of air. Combustion machine.

2. The restricting portion is inclined downward from the outer side toward the inner side in the radial direction. The combustion machine according to claim 1 .

3. The straightening plate is disposed below the restricting portion and includes an inclined portion that is inclined upward from the outer side toward the inner side in the radial direction. A combustion machine according to claim 1 or 2.

4. The inclined portion is disposed around an axis of the combustion liner, The straightening plate includes a plurality of protruding plates that protrude upward from the inclined portion and are arranged to extend radially around the axis of the combustion liner. The combustion machine according to claim 3.

5. The straightening plate includes five or more protruding plates. The combustion machine according to claim 4.

6. A bottom portion is provided below the flow plate, The angle between the inclined portion and the bottom portion is 35 degrees to 50 degrees. The combustion machine according to claim 3.

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