WO2009110509A1 - 加熱装置 - Google Patents
加熱装置 Download PDFInfo
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- WO2009110509A1 WO2009110509A1 PCT/JP2009/054076 JP2009054076W WO2009110509A1 WO 2009110509 A1 WO2009110509 A1 WO 2009110509A1 JP 2009054076 W JP2009054076 W JP 2009054076W WO 2009110509 A1 WO2009110509 A1 WO 2009110509A1
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- Prior art keywords
- flow path
- pipe
- unburned gas
- combustion
- water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B7/00—Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body
- F22B7/02—Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body without auxiliary water tubes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/101—Tubes having fins or ribs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/10—Water tubes; Accessories therefor
- F22B37/12—Forms of water tubes, e.g. of varying cross-section
Definitions
- the present invention relates to a heating device for heating a fluid to be heated.
- This application claims priority based on Japanese Patent Application No. 2008-053901 filed in Japan on March 4, 2008 and Japanese Patent Application No. 2008-053903 filed on March 4, 2008 in Japan. , The contents of which are incorporated herein.
- a small heating device for obtaining cooking steam or hot water for a bathroom is installed.
- a heating device is disclosed in which water flowing in a pipe is heated with high-temperature combustion gas generated by burning fuel together with combustion air, and steam is obtained by this water.
- the heating apparatus is used for heating various fluids (heated fluid) in addition to the generation of steam and hot water (see Patent Document 1). JP 2007-139358 A
- the unburnt gas is heated with the combustion gas in advance and then burned, so that the flame is stably maintained even in a small combustion chamber.
- the combustion gas is very hot, it is heated excessively before the unburned gas is supplied to the combustion chamber, and the unburned gas self-ignites, or fire spreads and burns outside the combustion chamber. There is a possibility.
- the amount of heat radiated from the large combustion chamber to the surroundings increases, resulting in a decrease in energy efficiency.
- the present invention has an object of reducing the size of a combustion chamber in a heating apparatus for heating a fluid to be heated, stabilizing a flame in the combustion chamber, and improving energy efficiency.
- the present invention is a heating device for heating a fluid to be heated, and is combustible ejected at a flow rate capable of maintaining a flame through a nozzle hole set to be smaller than a flame extinguishing distance.
- a first flow path in which the unburned gas containing fuel is burned and the combustion gas resulting from the combustion flows, and a second flow path in which the unburned gas supplied through the nozzle hole flows are provided.
- a second flow path may be formed around the first flow path.
- the unburned gas is heated by flowing through the second flow path formed around the first flow path through which the combustion gas flows.
- the 2nd channel is formed around the 1st channel, the perimeter does not contact the 1st channel. Accordingly, a part of the heat transferred from the combustion gas is radiated from the unburned gas.
- a configuration may be adopted in which a third flow path that is surrounded by the first flow path and through which the fluid to be heated flows is provided.
- the said 3rd flow path is comprised from the interior space of 3rd piping, the said 1st flow path and the 1st piping which concentrically surrounds the said 3rd piping and the said 3rd piping,
- the second flow path may be constituted by a space sandwiched between the first pipe and a second pipe concentrically surrounding the first pipe.
- a plurality of fins protruding from the outer peripheral surface of the third pipe toward the first flow path may be provided.
- the third pipe is bent at the first flow path side and the second flow path side at predetermined intervals.
- first flow path formed around the second flow path and the third flow path formed around the first flow path through which the fluid to be heated flows may be provided.
- the first flow path is formed around the second flow path through which the unburned gas flows, and the combustion gas flows through the first flow path. For this reason, the unburned gas flowing through the second flow path is heated by the high-temperature combustion gas flowing through the first flow path.
- a stable flame is formed by unburned gas being ejected from the second flow path through a nozzle hole set smaller than the extinguishing distance and at a flow rate at which the flame can be maintained. Further, the unburned gas is combusted by the stable flame and the third flow path is formed around the first flow path through which the combustion gas flows, and the fluid to be heated is flowed to the third flow path.
- an introduction portion for introducing the combustion gas from the first flow path may be provided in an area outside the third flow path and on the opposite side of the first flow path.
- the second flow path is configured from the internal space of the second pipe, and the first flow path is sandwiched between the second pipe and the first pipe that concentrically surrounds the second pipe.
- the third flow path may be composed of a space sandwiched between the first pipe and a third pipe concentrically surrounding the first pipe.
- the second flow path is configured from an internal space of the second pipe, and the third flow path is arranged apart from the second pipe around the second pipe. It may be configured from an internal space of piping, and the first flow path may be configured from a space surrounded by the second piping, the fourth piping, and a partition wall that closes the fourth piping.
- the heating device of the present invention the following excellent effects are exhibited. (1) Since the second flow path through which the unburned gas flows is formed around the first flow path through which the combustion gas flows, the entire circumference of the second flow path does not contact the first flow path, and the combustion gas Part of the heat transferred from the heat is dissipated from the unburned gas. For this reason, the combustion chamber can be made small by heating the unburned gas, and it is possible to suppress the unburned gas from being heated excessively and to form a stable flame in the combustion chamber. Therefore, the combustion chamber of the heating device that heats the fluid to be heated can be made smaller, and the flame in the combustion chamber can be stabilized.
- the unburned gas flowing through the second flow path is It is heated by the hot combustion gas flowing through.
- a stable flame is formed by unburned gas being ejected from the second flow path through a nozzle hole set smaller than the extinguishing distance and at a flow rate at which the flame can be maintained. Such a stable flame can be burned stably even if it directly touches the wall surface in contact with the cold fluid to be heated, and heat can be efficiently transferred to the wall surface.
- the unburned gas is combusted by the stable flame, and the third flow path is formed around the first flow path through which the combustion gas flows, and the fluid to be heated is flowed to the third flow path.
- the fluid to be heated flowing in the third flow path is heated by directly heating the third flow path with a stable flame. Therefore, compared with the case where the flow path of the fluid to be heated is heated only by the combustion gas, the amount of heat can be efficiently transferred to the fluid to be heated. Can be improved.
- the unburned gas flowing through the second flow path is heated by the high-temperature combustion gas flowing through the first flow path, and the heated unburned gas passes through the nozzle hole set to be smaller than the flame extinguishing distance and flames.
- FIG. 2 is a vertical sectional view showing a schematic schematic configuration of the apparatus of FIG. 1. It is a vertical sectional view showing a schematic schematic configuration of a small boiler in a second embodiment of the present invention. It is a horizontal sectional view showing a typical schematic structure of a small boiler in a 3rd embodiment of the present invention. It is a horizontal sectional view showing a typical schematic structure of a small boiler in a 4th embodiment of the present invention. It is a perspective view which shows the typical schematic structure of the small boiler in 5th Embodiment of this invention.
- FIG. 8 is a horizontal sectional view showing a schematic schematic configuration of the apparatus of FIG. 7. It is a vertical sectional view showing a schematic schematic configuration of the apparatus of FIG. It is a horizontal sectional view showing a typical schematic structure of a small boiler in a 6th embodiment of the present invention. It is a perspective view which shows the typical schematic structure of the apparatus of FIG. It is a horizontal sectional view showing a typical schematic structure of a small boiler in a 7th embodiment of the present invention. It is a horizontal sectional view showing a typical schematic structure of a small boiler in an 8th embodiment of the present invention.
- FIG. 1 to 3 are schematic configuration diagrams schematically showing a small boiler B1 of the present embodiment, in which FIG. 1 is a perspective view, FIG. 2 is a horizontal sectional view, and FIG. 3 is a vertical sectional view.
- the small boiler B1 of the present embodiment includes a first pipe 1 (first pipe), a second pipe 2 (second pipe), and a third pipe 3 (third pipe). It has a triple tube structure arranged concentrically in plan view.
- the first pipe 1 is a pipe that extends in the vertical direction and has a lower end 11 that is a closed end, and has a nozzle hole whose diameter is set smaller than the extinguishing distance of unburned gas in the side wall near the lower end 11. A plurality of 12 are formed. And the 1st piping 1 is formed with the material (for example, brass (brass) etc.) with high heat conductivity.
- the second pipe 2 is a pipe that extends in the vertical direction and surrounds the first pipe 1 concentrically.
- the lower end 21 is a closed end, and is formed of a material having high heat transfer like the first pipe 1. ing.
- the third pipe 3 is a pipe that extends in the vertical direction and is inserted into the first pipe 1, and the lower end 31 is a closed end.
- the third pipe 3 is preferably made of a material having high heat transfer like the first pipe 1 and the second pipe 2.
- the internal space of the 3rd piping 3 is the water flow path R3 (3rd flow path) through which water (to-be-heated fluid) W flows. That is, in the small boiler B ⁇ b> 1 of the present embodiment, the water flow path R ⁇ b> 3 is configured from the internal space of the third pipe 3.
- a water supply part (not shown) for supplying water W to the water flow path R3 is connected to the vicinity of the lower end of the water flow path R3, and the water W whose flow rate is adjusted by the water supply part is supplied to the water flow path R3. Is done.
- a discharge part (not shown) for discharging steam generated by evaporation of the water W in the water flow path R3 is connected in the vicinity of the upper end of the water flow path R3. The steam whose flow rate is adjusted is discharged to the outside.
- combustion gas flow path R1 (the first gas flow through which the unburned gas G1 is burned) flows. 1 flow path). That is, in small boiler B1 of this embodiment, combustion gas flow path R1 is comprised from the space pinched
- the space between the first pipe 1 and the second pipe 2 is an unburned gas flow path R2 (second flow path) through which unburned gas G1 containing combustible fuel flows. That is, the unburned gas flow path R2 is composed of a space sandwiched between the first pipe 1 and the second pipe 2 concentrically surrounding the first pipe. The upper end of the second pipe 2 is connected to an unburned gas supply device (not shown) for supplying unburned gas G1 to the unburned gas flow path R2.
- the unburned gas G1 a mixture of fuel and oxidant can be used.
- the fuel petroleum fuel, natural gas, or the like can be used.
- the unburned gas G1 is supplied from the unburned gas supply device connected to the second pipe 2 to the unburned gas flow path R2 and formed in the first pipe 1.
- a flame is formed in the combustion chamber K by igniting and burning the unburned gas G1 ejected from the nozzle hole 12 formed.
- the combustion gas G2 generated by burning the unburned gas G1 flows through the combustion gas flow path R1 and is discharged.
- the high-temperature combustion gas G2 flows through the combustion gas flow path R1, so that the unburned gas G1 flowing through the unburned gas flow path R2 is heated. That is, the heat quantity of the combustion gas G2 is transferred to the unburned gas G1 through the first pipe 1 functioning as a heat exchange wall, and the unburned gas G1 is heated.
- the unburned gas G1 heated by heat exchange with the combustion gas G2 is jetted into the first pipe 1 through the nozzle hole 12 in a heated state. Then, the unburned gas G1 ejected from the nozzle hole 12 burns in the combustion chamber K.
- the nozzle hole 12 formed in the 1st piping 1 is set smaller than the flame extinction distance in the combustion environment in the combustion chamber K of the unburned gas G1, a flame spreads to unburned gas flow path R2. It is suppressed. Further, since the unburned gas flow path R2 is formed around the combustion gas flow path R1, the entire circumference of the unburned gas flow path R2 is not in contact with the combustion gas flow path R1, and heat is transferred from the combustion gas G2. Part of the amount of heat generated is radiated from the unburned gas G1.
- the unburned gas G1 supplied to the combustion chamber K via the unburned gas flow path R2 flows through the combustion gas flow path R1 in a state where the combustion in the combustion chamber K is continued. Heated by the combustion gas G2. For this reason, a stable flame can be formed even if the combustion chamber K is extremely small as compared with the combustion chamber in the conventional heating device.
- the water W in the water channel R3 is the flame in the combustion chamber K and the combustion gas G2 in the combustion gas channel R2. Evaporates by heating. That is, the heat generated by the combustion is transferred to the water W through the second pipe 2 functioning as a heat exchange wall, and as a result, the water W is heated and evaporated. And the vapor
- the water flow path R3 is surrounded by the combustion gas flow path R1, heat can be transferred from the entire circumference of the water flow path R3 to the water W, and the water W can be efficiently heated. .
- the unburned gas flow path R2 through which the unburned gas G1 flows is formed around the combustion gas flow path R1 through which the combustion gas G2 flows.
- the entire circumference of the path R2 does not come into contact with the unburned gas flow path R1, and part of the heat transferred from the combustion gas G2 is radiated from the unburned gas G1.
- the combustion chamber K can be made smaller by heating the unburned gas G1, and the flame in the combustion chamber K can be stabilized by suppressing the unburned gas G1 from being heated too much. It becomes. Therefore, the combustion chamber K can be made smaller and the flame in the combustion chamber K can be stabilized.
- FIG. 4 is a vertical sectional view showing a schematic configuration diagram schematically showing the small boiler B2 of the present embodiment.
- the small boiler B2 of the present embodiment includes a fourth pipe 4 surrounding the second pipe 2 concentrically.
- a space sandwiched between the second pipe 2 and the fourth pipe 4 is configured as a storage unit 5 that is connected to the water flow path R3 and stores water W.
- the water W once stored in the storage unit 5 is supplied to the water flow path R3, but the water W is supplied from the unburned gas G1 in the storage unit 5. Receive a portion of the heat released. For this reason, the quantity of heat radiated from the unburned gas G1 can be used for heating the water W, and the water W can be heated more efficiently.
- FIG. 5 is a horizontal sectional view showing a schematic schematic configuration diagram of the small boiler B3 of the present embodiment.
- the small boiler B3 of the present embodiment includes a plurality of fins 10 protruding from the outer peripheral surface of the third pipe 3 toward the combustion gas flow path R1.
- the fins 10 are integrally formed with the third pipe 3 and are formed of a material having high heat transfer properties as with the third pipe 3.
- the fin 10 increases the heat exchange area between the combustion gas G2 flowing through the combustion gas flow path R1 and the water W flowing through the water flow path R3, and is more efficient. Thus, it becomes possible to heat the water W.
- FIG. 7 is a horizontal sectional view showing a schematic schematic configuration diagram of the small boiler B4 of the present embodiment.
- the second pipe 2 is bent into a star shape at a predetermined interval between the combustion gas flow path R1 side and the water flow path R3 side.
- the third pipe 3 is bent at a predetermined interval to have a star shape, whereby the combustion gas G2 and the water flow path R3 flowing through the combustion gas flow path R1 are separated.
- the heat exchange area with the flowing water W increases, and the water W can be heated more efficiently.
- FIGS. 7 to 9 are schematic configuration diagrams schematically showing a small boiler B101 according to a fifth embodiment of the present invention.
- FIG. 7 is a perspective view
- FIG. 8 is a horizontal sectional view
- FIG. 9 is a vertical sectional view.
- the small boiler B101 of the present embodiment includes a first pipe 101 (first pipe), a second pipe 102 (second pipe), and a third pipe 103 (third pipe). It has a triple tube structure arranged concentrically in plan view.
- the second pipe 102 is a pipe that extends in the vertical direction and has a lower end 111 as a closed end, and has a nozzle hole whose diameter is set smaller than the extinguishing distance of unburned gas in the side wall near the lower end 111. A plurality of 112 are formed. And the 2nd piping 102 is formed with the material (for example, brass (brass) etc.) with high heat conductivity.
- the internal space of the second pipe 102 is an unburned gas flow path R2 (second flow path) through which unburned gas G1 containing combustible fuel flows. That is, in the small boiler B101 of the present embodiment, the unburned gas flow path R2 is configured from the internal space of the second pipe 102.
- the second pipe 102 is connected at its upper end to an unburned gas supply device (not shown) for supplying unburned gas G1 to the unburned gas flow path R2.
- the unburned gas G1 a mixture of fuel and oxidant can be used.
- the fuel petroleum fuel, natural gas, or the like can be used.
- the first pipe 101 is a pipe that extends in the vertical direction and surrounds the second pipe 102 concentrically.
- the lower end 121 is a closed end, and is formed of a material having high heat transfer like the second pipe 102. ing.
- the unburned gas G1 is burned, and the combustion gas flow path R1 (in which the combustion gas G2 generated by burning the unburned gas G1 flows) First flow path). That is, in the small boiler B101 of the present embodiment, the combustion gas flow path R1 is composed of a space sandwiched between the second pipe 102 and the first pipe 101 that concentrically surrounds the second pipe 102.
- the vicinity of the lower end of the combustion gas flow path R1 (near the nozzle hole 112) is a combustion chamber K in which the unburned gas G1 ejected from the nozzle hole 112 burns.
- the combustion chamber K is provided with an ignition device (not shown).
- the third pipe 103 is a pipe that extends in the vertical direction and concentrically surrounds the first pipe 101, and the lower end 131 is a closed end. In addition, it is preferable that this 3rd piping 103 is formed with a material with low heat conductivity.
- a space between the third pipe 103 and the first pipe 101 is a water flow path R3 (third flow path) through which water (heated fluid) W flows. That is, in the small boiler B101 of the present embodiment, the water flow path R3 is configured by a space sandwiched between the first pipe 101 and the third pipe 103 concentrically surrounding the first pipe 101.
- a water supply part (not shown) for supplying water W to the water flow path R3 is connected near the lower end of the water flow path R3, and the water W whose flow rate is adjusted to the water flow path R3 by this water supply part. Is supplied. Further, a discharge part (not shown) for discharging steam generated by evaporation of the water W of the water flow path R3 is connected to the vicinity of the upper end of the water flow path R3. The steam whose flow rate is adjusted is discharged to the outside.
- the unburned gas G1 is supplied from the unburned gas supply device connected to the second pipe 102 to the unburned gas flow path R2, and the second pipe 102 is used.
- a flame is formed in the combustion chamber K by igniting and burning the unburned gas G1 ejected from the nozzle hole 112 formed in the above.
- the combustion gas G2 generated by burning the unburned gas G1 flows through the combustion gas flow path R1 and is discharged.
- the high-temperature combustion gas G2 flows through the combustion gas flow path R1 formed around the unburned gas flow path R2, and thus the unburned gas flow through the unburned gas flow path R2.
- the fuel gas G1 is heated. That is, the heat quantity of the combustion gas G2 is transferred to the unburned gas G1 through the second pipe 102 functioning as a heat exchange wall, and the unburned gas G1 is heated.
- the unburned gas G1 heated by exchanging heat with the combustion gas G2 is ejected to the outside of the second pipe 102 through the nozzle hole 112 in a state where the unburned gas G1 is heated to the vicinity of the ignitable temperature.
- the unburned gas G1 ejected from the nozzle hole 112 is ignited and burned by the flame formed in the combustion chamber K.
- the nozzle hole 112 formed in the 2nd piping 102 is set smaller than the flame extinction distance in the combustion environment in the combustion chamber K of the unburned gas G1, a flame does not spread to unburned gas flow path R2. . For this reason, the flame is stabilized in the combustion chamber K, and combustion is continued.
- the unburned gas G1 supplied to the combustion chamber K via the unburned gas flow path R2 flows through the combustion gas flow path R1 in a state where the combustion in the combustion chamber K is continued. Heated by the combustion gas G2. For this reason, even if the combustion chamber K is made extremely small as compared with the combustion chamber in the conventional heating device, a stable flame can be formed.
- the water W in the water channel R3 is composed of the flame in the combustion chamber K and the combustion gas G2 in the combustion gas channel R1. Is evaporated by heating. That is, the heat amount of the flame and the heat amount of the combustion gas G2 are transferred to the water W through the first pipe 101 functioning as a heat exchange wall, and as a result, the water W is heated and evaporated. And the vapor
- the combustion gas passage R1 through which the combustion gas G2 flows is formed around the unburned gas passage R2 through which the unburned gas G1 flows. For this reason, the unburned gas G1 flowing through the unburned gas flow path R2 is heated by the high-temperature combustion gas G2 flowing through the combustion gas flow path R1. Further, a stable flame is formed by the unburned gas G1 being ejected from the unburned gas flow path R2 through the nozzle hole 112 set to be smaller than the extinguishing distance and at a flow rate capable of maintaining the flame. . Such a stable flame can be directly brought into contact with the wall surface (first pipe 101) in contact with the cold water W.
- a water flow path R3 is formed around the combustion gas flow path R1 where a stable flame is formed, and water W is caused to flow through the water flow path R3.
- the water W flowing through the water channel R3 is heated by directly heating the water channel R3 with a stable flame. Therefore, compared with the case where the water flow path R3 is heated only by the combustion gas G2, the amount of heat can be efficiently transferred to the water W. Therefore, according to the small boiler B101 of this embodiment, energy efficiency can be improved.
- the unburned gas G1 flowing through the unburned gas flow path R2 is heated by the high-temperature combustion gas G2 flowing through the combustion gas flow path R1, and the heated unburned gas G1. Is combusted by being ejected from the unburned gas flow path R2 through the nozzle hole 112 set to be smaller than the flame extinguishing distance and at a flow rate capable of maintaining the flame.
- the unburned gas G1 is sufficiently heated by the high-temperature combustion gas G2, so that stable combustion can be continued in the small combustion chamber K. Therefore, the combustion chamber can be made small and the apparatus can be miniaturized.
- FIG. 10 and 11 are schematic configuration diagrams schematically showing the small boiler B102 of the present embodiment, in which FIG. 10 is a horizontal sectional view and FIG. 11 is a perspective view.
- the unburned gas flow path R2 is configured from the internal space of the second pipe 102 in the same manner as the small boiler B101 of the fifth embodiment, and the water flow path R3.
- the height of the partition 105 is set low compared with the height of the 2nd piping 102 and the 4th piping 104.
- FIG. 11 a gap is formed between the fourth pipes 104 in the upper part of the small boiler B102.
- the gap functions as an introduction portion 106 that introduces the combustion gas G2 into the region outside the water flow channel R3 and the region opposite to the combustion gas flow channel R1.
- the unburned gas G1 heated by heat exchange with the combustion gas G2 is ejected into the combustion gas flow path R1.
- the combustion gas G2 is newly generated after being combusted, a part of the combustion gas G2 goes around to the back side of the fourth pipe 104 (the side opposite to the combustion gas flow path R1) through the introduction portion 106.
- the whole periphery of the 4th piping 104 is heated with the combustion gas G2, and the water W can be heated more efficiently. Therefore, energy efficiency can be further improved.
- FIG. 12 is a schematic schematic configuration diagram of the small boiler B103 of the present embodiment, and is a horizontal sectional view.
- the small boiler B103 of the present embodiment includes a plurality of fins 110 protruding from the outer peripheral surface of the first pipe 101 toward the water flow path R3.
- the fins 110 are integrally formed with the first pipe 101 and are formed of a material having high heat conductivity, like the first pipe 101.
- the fin 110 increases the heat exchange area between the combustion gas G2 flowing through the combustion gas flow path R1 and the water W flowing through the water flow path R3, and is more efficient. Thus, it becomes possible to heat the water W. Therefore, energy efficiency can be further improved.
- FIG. 13 is a schematic schematic configuration diagram of a small boiler B104 of the present embodiment, and is a horizontal sectional view. As shown in this figure, in the small boiler B104 of this embodiment, the first pipe 1 is bent into a star shape at a predetermined interval between the combustion gas flow path R1 side and the water flow path R3 side.
- the first pipe 101 is bent at a predetermined interval to form a star shape, so that the combustion gas G2 and the water flow path flowing through the combustion gas flow path R1.
- the heat exchange area with the water W flowing through R3 increases, and the water W can be heated more efficiently. Therefore, energy efficiency can be further improved.
- a small boiler has been described as an example of the heating device.
- the present invention is not limited to this, and can be applied to a water heater that heats water to form hot water, an apparatus that heats oil or gas, and the like.
- it is applicable also to industrial products, such as a large sized boiler and a fluidized bed boiler using the heated powder fluid.
- the heating device of the present invention is applied to a circulating fluidized bed boiler, the powdered fluid can be transported using combustion gas.
- first pipes 1 and 101, the second pipes 2 and 102, the third pipes 3 and 103, and the fourth pipes 4 and 104 in the first to eighth embodiments are examples, and are arbitrary. Can be set to
- the combustion chamber in the heating device that heats the fluid to be heated, the combustion chamber can be made smaller, the flame in the combustion chamber can be stabilized, and the energy efficiency can be improved.
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Abstract
Description
(1)未燃ガスが流れる第2流路が、燃焼ガスが流れる第1流路の周りに形成されているため、第2流路の全周が第1流路と接触せず、燃焼ガスから伝熱された熱量の一部が未燃ガスから放熱される。このため、未燃ガスを加熱することで燃焼室を小さくすることができると共に、未燃ガスが加熱され過ぎることを抑制して、燃焼室に安定な火炎を形成することができる。したがって、被加熱流体を加熱する加熱装置の燃焼室を小さくし、燃焼室の火炎を安定させることができる。
(2)未燃ガスが流れる第2流路周りに第1流路が形成され、上記第1流路に燃焼ガスが流されるため、第2流路を流れる未燃ガスが、第1流路を流れる高温の燃焼ガスによって加熱される。また、未燃ガスが消炎距離よりも小さく設定されたノズル孔を介してかつ火炎の維持が可能な流速にて上記第2流路から噴出されることによって安定した火炎が形成される。このように安定した火炎は、冷たい被加熱流体と接する壁面に直接触れても安定に燃焼することが可能で、さらに上記壁面へ効率的に熱を伝達することが可能となる。そして、安定した火炎により未燃ガスが燃焼されると共に燃焼ガスが流れる第1流路の周りに第3流路が形成され、前記第3流路に被加熱流体が流される。この結果、第3流路に流れる被加熱流体は、安定した火炎にて第3流路が直接加熱されることによって加熱される。したがって、燃焼ガスによってのみ被加熱流体の流路を加熱する場合と比較して、効率的に被加熱流体に熱量を伝熱することができるため、被加熱流体を加熱する加熱装置におけるエネルギー効率を向上させることができる。
(3)第2流路を流れる未燃ガスが第1流路を流れる高温の燃焼ガスによって加熱され、この加熱された未燃ガスが消炎距離よりも小さく設定されたノズル孔を介してかつ火炎の維持が可能な流速にて上記第2流路から噴出されることによって燃焼される。上記の構成は、未燃ガスが高温の燃焼ガスによって十分に加熱されるため、安定燃焼するための大きな燃焼室を必要とせず、マイクロチャネルの燃焼室にて燃焼を継続することが可能となる。したがって、燃焼室を小さくし、加熱装置を小型化することができる。
1、101 第1配管
12、112 ノズル孔
2、102 第2配管
3、103 第3配管
4、104 第4配管
R1 燃焼ガス流路(第1流路)
R2 未燃ガス流路(第2流路)
R3 水流路(第3流路)
G1 未燃ガス
G2 燃焼ガス
W 水(被加熱流体)
K 燃焼室
105 隔壁
106 導入部
図1~図3は、本実施形態の小型ボイラB1を模式的に示した概略構成図で、図1が斜視図、図2が水平断面図、図3が鉛直断面図である。これらの図に示すように、本実施形態の小型ボイラB1は、第1配管1(第1配管)と、第2配管2(第2配管)と、第3配管3(第3配管)とが平面視において同心に配置された三重管構造を有している。
次に、本発明の第2実施形態について説明する。また、本第2実施形態の説明において、上記第1実施形態と同様の部分については、その説明を省略あるいは簡略化する。
次に、本発明の第3実施形態について説明する。なお、本第3実施形態の説明においても、上記第1実施形態と同様の部分については、その説明を省略あるいは簡略化する。
次に、本発明の第4実施形態について説明する。なお、本第4実施形態の説明においても、上記第1実施形態と同様の部分については、その説明を省略あるいは簡略化する。
図7~図9は、本発明の第5実施形態の小型ボイラB101を模式的に示した概略構成図で、図7が斜視図、図8が水平断面図、図9が鉛直断面図である。これらの図に示すように、本実施形態の小型ボイラB101は、第1配管101(第1配管)と、第2配管102(第2配管)と、第3配管103(第3配管)とが平面視において同心に配置された三重管構造を有している。
次に、本発明の更に他の第6実施形態について説明する。また、本第6実施形態の説明において、上記第5実施形態と同様の部分については、その説明を省略あるいは簡略化する。
次に、本発明の更に他の第7実施形態について説明する。なお、本第7実施形態の説明においても、上記第5実施形態と同様の部分については、その説明を省略あるいは簡略化する。
次に、本発明の更に他の第8実施形態について説明する。なお、本第8実施形態の説明においても、上記第5実施形態と同様の部分については、その説明を省略あるいは簡略化する。
Claims (9)
- 消炎距離よりも小さく設定されたノズル孔を介してかつ火炎の維持が可能な流速にて噴出された可燃燃料を含む未燃ガスが燃焼されると共に前記燃焼による燃焼ガスが流れる第1流路と、前記ノズル孔を介して供給される前記未燃ガスが流れる第2流路とを備える加熱装置。
- 前記第1流路に囲まれると共に被加熱流体が流れる第3流路を備えると共に、前記第2流路が、前記第1流路の周りに形成される請求項1記載の加熱装置。
- 前記第3流路が第3配管の内部空間から構成され、前記第1流路が前記第3配管と第3配管を同心円状に囲う第1配管に挟まれた空間から構成され、前記第2流路が前記第1配管と第1配管を同心円状に囲う第2配管に挟まれた空間から構成される請求項2記載の加熱装置。
- 前記第3配管の外周面から前記第1流路に向けて突設される複数のフィンを備える請求項3記載の加熱装置。
- 前記第3配管は、所定間隔ごとに前記第1流路側と前記第2流路側とに屈曲されている請求項3記載の加熱装置。
- 前記第2流路と、前記第2流路の周りに形成される前記第1流路と、前記被加熱流体が流れ、前記第1流路の周りに形成される第3流路とを備える加熱装置。
- 前記第3流路の外側領域であって前記第1流路と反対側の領域に、前記第1流路から前記燃焼ガスを導入する導入部を備える請求項6記載の加熱装置。
- 前記第2流路が第2配管の内部空間から構成され、前記第1流路が前記第2配管と前記第2配管を同心円状に囲う第1配管とに挟まれた空間から構成され、前記第3流路が前記第1配管と前記第1配管を同心円状に囲う第3配管とに挟まれた空間から構成される請求項6または7記載の加熱装置。
- 前記第2流路が第2配管の内部空間から構成され、前記第3流路が前記第2配管を中心として前記第2配管から離間して配列される複数の第4配管の内部空間から構成され、前記第1流路が前記第2配管と前記第4配管と前記第4配管同士の間を閉鎖する隔壁とによって囲まれた空間から構成される請求項6または7記載の加熱装置。
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2010137815/06A RU2482388C2 (ru) | 2008-03-04 | 2009-03-04 | Нагревательное устройство |
| CA2717301A CA2717301C (en) | 2008-03-04 | 2009-03-04 | Heating apparatus |
| BRPI0908046-5A BRPI0908046A2 (pt) | 2008-03-04 | 2009-03-04 | Aparelho aquecedor |
| EP09716623.5A EP2253882B1 (en) | 2008-03-04 | 2009-03-04 | Heating apparatus |
| US12/919,836 US20110005470A1 (en) | 2008-03-04 | 2009-03-04 | Heating apparatus |
| KR1020107019898A KR101319950B1 (ko) | 2008-03-04 | 2009-03-04 | 가열 장치 |
| CN200980107579.9A CN101965481B (zh) | 2008-03-04 | 2009-03-04 | 加热装置 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008053903A JP5211765B2 (ja) | 2008-03-04 | 2008-03-04 | 加熱装置 |
| JP2008-053901 | 2008-03-04 | ||
| JP2008-053903 | 2008-03-04 | ||
| JP2008053901A JP5211764B2 (ja) | 2008-03-04 | 2008-03-04 | 加熱装置 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009110509A1 true WO2009110509A1 (ja) | 2009-09-11 |
Family
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2009/054076 Ceased WO2009110509A1 (ja) | 2008-03-04 | 2009-03-04 | 加熱装置 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20110005470A1 (ja) |
| EP (1) | EP2253882B1 (ja) |
| KR (1) | KR101319950B1 (ja) |
| CN (1) | CN101965481B (ja) |
| BR (1) | BRPI0908046A2 (ja) |
| CA (1) | CA2717301C (ja) |
| RU (1) | RU2482388C2 (ja) |
| TW (1) | TW200946838A (ja) |
| WO (1) | WO2009110509A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103210305A (zh) * | 2010-11-18 | 2013-07-17 | 国立大学法人东北大学 | 燃烧实验装置 |
| US9523668B2 (en) | 2010-01-19 | 2016-12-20 | Tohoku University | Fuel property determination method and fuel property determination device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9920648B2 (en) * | 2011-09-07 | 2018-03-20 | Eric William Newcomb | Concentric three chamber heat exchanger |
| WO2018065980A1 (en) | 2016-10-06 | 2018-04-12 | Foresight Energy Ltd | System and method for management of an electricity distribution grid |
| CN112407346B (zh) * | 2020-11-12 | 2022-07-19 | 中国空间技术研究院 | 金属纤维表面燃烧结构热试验方法及装置 |
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Also Published As
| Publication number | Publication date |
|---|---|
| RU2482388C2 (ru) | 2013-05-20 |
| KR20100120203A (ko) | 2010-11-12 |
| CA2717301A1 (en) | 2009-09-11 |
| EP2253882A4 (en) | 2014-02-19 |
| RU2010137815A (ru) | 2012-04-10 |
| US20110005470A1 (en) | 2011-01-13 |
| TW200946838A (en) | 2009-11-16 |
| BRPI0908046A2 (pt) | 2015-08-11 |
| KR101319950B1 (ko) | 2013-10-21 |
| EP2253882B1 (en) | 2016-05-25 |
| CA2717301C (en) | 2013-07-30 |
| CN101965481A (zh) | 2011-02-02 |
| EP2253882A1 (en) | 2010-11-24 |
| CN101965481B (zh) | 2016-05-04 |
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