JP3576082B2 - Liquid fuel combustion heater - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a liquid fuel combustion heating machine in which waste oil such as machine oil and food oil, which is no longer required, is burned at a high temperature for pollution-free treatment, and the large thermal energy obtained at this time can be used for heating a horticultural house. About.
[0002]
[Prior art]
Conventionally, as this type of heating machine, there has been used an oil stove technology that burns a core impregnated with kerosene or burns kerosene in a mist state. Technology using waste oil after use of food oil such as machine oil and tempura has been proposed. However, burning waste oil at a low temperature generates harmful substances such as dioxin, thereby polluting the atmosphere.
For example, Japanese Patent Application Laid-Open No. Hei 7-260157 discloses that in a type in which waste oil serving as fuel is stored and burned at the bottom of a cylindrical combustion chamber, a large amount of air is formed on the peripheral surface of an air ejection pipe provided at the center of the combustion chamber. A stove that burns waste oil by opening an ejection hole and supplying air to the combustion chamber from the air ejection hole is described.
Japanese Patent Application Laid-Open No. 10-267283 discloses that waste oil serving as fuel is stored at the bottom of a cylindrical combustion chamber.MeIn the combustion type, air injection holes are vertically provided at predetermined intervals in an air injection tube provided vertically in the center of the combustion chamber, and a semicircular air flow control plate is provided substantially at the center of the air injection tube. Accordingly, a stove that convectively convects the air blown out from the air ejection holes is described. Further, in the present invention, an air ejection pipe is provided at a lower end portion of the air ejection pipe in a horizontal direction, and a hole for blowing air obliquely downward is provided in the horizontal air ejection pipe, and the air is convected in a vertical direction to waste oil. Are burning.
In Japanese Patent No. 3025967, waste oil as fuel is stored at the bottom of a cylindrical combustion chamber.MeIn the combustion type, a large number of air ejection holes are formed at regular intervals in a square air injection pipe provided vertically in the center of the combustion chamber, and the air blown out from the air ejection holes is swirled. Further, in the present invention, a stove is described which assists combustion immediately after ignition by air from an air injection hole provided at a bottom portion of an air injection pipe, and also eliminates smoke during fire extinguishing.
[0003]
[Problems to be solved by the invention]
However, since the conventional technology described in the above publication has a structure of only the primary combustion chamber, it can only obtain heat energy of about 150,000 kcal, and cannot obtain a combustion temperature of 1500 ° C. or more. If a difficult waste oil is used, incomplete combustion may occur.
[0004]
Therefore, the present invention promotes agitation of combustion gas and air, complete combustion at a combustion temperature of 1500 ° C. or more, and obtains a clean exhaust gas containing no pollutants, and obtains thermal energy of 1.7 million kcal or more. It is an object to provide a liquid fuel combustion heater.
A further object of the present invention is to provide a liquid fuel combustion heater capable of making combustion more complete, obtaining cleaner exhaust, and utilizing more of the obtained heat energy.
Further, the present invention provides a liquid fuel combustion warmer that supplies an appropriate amount of air necessary for combustion and further enhances agitation of air and combustion gas inside the primary combustion chamber to bring combustion closer to complete combustion. The purpose is to:
It is a further object of the present invention to provide a liquid fuel combustion heater that completes combustion by increasing the agitation of combustion gas and air in the secondary combustion chamber.
[0005]
[Means for Solving the Problems]
The liquid fuel combustion heater according to the present invention according to claim 1, wherein the liquid fuel has a primary combustion chamber that vaporizes and burns the liquid fuel stored at the bottom, and a secondary combustion chamber connected to the primary combustion chamber. A fuel combustion heater,The primary combustion chamber has a vertical combustion wall, a bottom part for storing liquid fuel, a primary combustion chamber outlet part connected to the secondary combustion chamber at an upper part of the combustion wall, and a substantially center of the primary combustion chamber. The secondary combustion chamber is connected to a horizontal outer wall portion and the primary combustion chamber outlet portion to take in the combustion gas burned in the primary combustion chamber. A combustion chamber inlet portion, a combustion flow regulating plate provided inside the secondary combustion chamber, and a secondary combustion chamber outlet portion that is an outlet for a combustion gas; At one end of the outer wall, the outlet of the secondary combustion chamber is connected to the other end of the outer wall, and a suction fan for guiding the combustion flow to the outside of the exhaust duct is provided downstream of the secondary combustion chamber. A plurality of air ejection holes are provided in the horizontal air ejection tube, and the combustion flow regulating plate has a spiral shape. And,In the primary combustion chamberThe combustion gas is swirled and raised by the air ejection holes., In the secondary combustion chamberThe combustion gas that has reached the upper part of the primary combustion chamber is moved by being rotated by the spiral-shaped combustion flow regulating plate in the direction from one end to the other end of the secondary combustion chamber.It is characterized by making it.
A liquid fuel combustion warmer according to the present invention according to claim 2, wherein the liquid fuel has a primary combustion chamber that vaporizes and burns the liquid fuel stored at the bottom, and a secondary combustion chamber connected to the primary combustion chamber. A fuel combustion heater, wherein the primary combustion chamber has a vertical combustion wall, a bottom for storing liquid fuel, and a primary combustion chamber outlet connected to the secondary combustion chamber above the combustion wall. And a vertical air ejection pipe arranged substantially at the center of the primary combustion chamber, and the secondary combustion chamber is connected to a horizontal outer wall portion and the primary combustion chamber outlet portion so as to be connected to the primary combustion chamber. A secondary combustion chamber inlet for taking in the combustion gas burned in, a combustion flow regulating plate provided inside the secondary combustion chamber, and a secondary combustion chamber outlet which is a combustion gas outlet, The secondary combustion chamber inlet is located at one end of the outer wall and the secondary combustion chamber outlet is located at the outer wall. A suction fan that is connected to the other end surface of the second combustion chamber and guides the combustion flow to the outside of the exhaust duct is provided downstream of the secondary combustion chamber; a plurality of air ejection holes are provided in the horizontal air ejection pipe; The plate is composed of a plurality of plates, and in the primary combustion chamber, the combustion gas is swirled up by the air ejection holes and raised, and in the secondary combustion chamber, the combustion gas reaching the upper part of the primary combustion chamber is removed by the secondary combustion chamber. The flow direction is refracted by the combustion flow regulating plate and moved from the one end to the other end of the next combustion chamber.
Claim 3Description of the bookMing is,The liquid fuel combustion heater according to claim 1 or 2, whereinOn the bottomHorizontal air blow-off pipeDistributionPlaceThe horizontal air ejection pipe is provided with an air ejection hole for swirling the combustion gas in the primary combustion chamber.
According to a fourth aspect of the present invention, in the liquid fuel combustion heater according to the first or second aspect, a tertiary combustion chamber is provided at an outlet of the secondary combustion chamber of the secondary combustion chamber. I do.
Claim 5Description of the bookMing is,The liquid fuel combustion heater according to claim 4,The tertiary combustion chamber is configured to raise the combustion flow from the lower part to the upper part.WasIt is characterized by the following.
The present invention according to claim 6 is:Claim 4Described inofIn the liquid fuel combustion heater, a use-side medium passage is provided around or inside the secondary combustion chamber and the tertiary combustion chamber, and heat generated in the secondary combustion chamber and the tertiary combustion chamber is used as the use-side medium. It is characterized in that the passage is transmitted to a flowing medium.
The present invention described in claim 7 is based on claim 1.Or Claim 2Wherein the combustion temperature inside the secondary combustion chamber is higher than the combustion temperature inside the primary combustion chamber.
The present invention described in claim 8 is based on claim 1.Or Claim 24. The liquid fuel combustion heater according to claim 1, wherein air is supplied to the secondary combustion chamber to supply air.HoleIt is characterized by having been provided.
[0006]
BEST MODE FOR CARRYING OUT THE INVENTION
The liquid fuel combustion heater according to the first embodiment of the present invention has a primary combustion chamber.The combustion gas is swirled and raised by the air outlet., In the secondary combustion chamberThe combustion gas reaching the upper part of the primary combustion chamber is rotated and moved by the spiral-shaped combustion flow regulating plate from the one end of the secondary combustion chamber to the other end.Things. According to the present embodiment, the combustion gas vaporized at the bottom of the primary combustion chamber is swirled inside the primary combustion chamber, so that the combustion gas and the air are stirred. Accordingly, combustion in the primary combustion chamber approaches complete combustion. Then, the combustion gas after the primary combustion moves to the secondary combustion chamber. The combustion gas transferred to the secondary combustion chamber is further swirled inside the secondary combustion chamber.In turnTherefore, the combustion gas and the air are agitated, so that the combustion can be made closer to complete combustion.
[0007]
In the liquid fuel combustion heater according to the second embodiment of the present invention, the combustion gas is swirled by the air ejection holes in the primary combustion chamber to rise and reaches the upper part of the primary combustion chamber in the secondary combustion chamber. The combustion gas is moved in a direction from the one end side end of the secondary combustion chamber to the other end side by refracting the flow direction by the spiral combustion flow regulating plate. According to the present embodiment, the combustion gas vaporized at the bottom of the primary combustion chamber is swirled inside the primary combustion chamber, so that the combustion gas and the air are stirred. Accordingly, combustion in the primary combustion chamber approaches complete combustion. Then, the combustion gas after the primary combustion moves to the secondary combustion chamber. The combustion gas transferred to the secondary combustion chamber is further agitated by a plurality of refractions in the flow direction inside the secondary combustion chamber, so that the combustion gas and the air are agitated.
[0008]
Of the present inventionThirdEmbodiment ofIs according to the first or second embodiment.Liquid fuel combustion heaterAt,bottomPartHorizontal air blow-off pipeDistributionPlaceThe horizontal air ejection pipe is provided with an air ejection hole for swirling the combustion gas in the primary combustion chamber. According to the present embodiment, the combustion gas vaporized at the bottom of the primary combustion chamber is swirled inside the primary combustion chamber by the air ejection holes provided in the horizontal air ejection pipe, so that the combustion gas and the air are agitated. You. Further, combustion of the combustion gas in the primary combustion chamber, which is agitated and rises, is further promoted by new air supplied from an air ejection hole provided in the vertical air ejection pipe. Accordingly, combustion in the primary combustion chamber approaches complete combustion. Then, the combustion gas after the primary combustion moves to the secondary combustion chamber and further burns, so that the combustion can be approached to complete combustion.
[0009]
Further, in the fourth embodiment of the present invention, a tertiary combustion chamber is provided in the liquid fuel combustion heater according to the first or second embodiment. By providing the tertiary combustion chamber in this manner, the combustion gas after the secondary combustion moves to the tertiary combustion chamber, and is more completely burned in the tertiary combustion chamber, so that more heat energy can be obtained.
[0010]
Of the present inventionFifthEmbodiment ofAccording to the fourth embodimentLiquid fuel combustion heaterAt,threeThe next combustion chamber is configured to raise the combustion flow from the bottom to the top.WasThings. According to the present embodimentBaThe combustion gas that has moved to the next combustion chamber rises from the lower part to the upper part, so that the emission of particulates such as soot and the like generated at the end of combustion can be reduced.You.
[0011]
Further, a sixth embodiment of the present invention provides:4thIn the liquid fuel combustion heater according to the embodiment, a use side medium passage is provided around or inside the secondary combustion chamber and the tertiary combustion chamber, and the heat generated in the secondary combustion chamber and the tertiary combustion chamber is used for the use side medium. With the configuration in which the passage is transmitted to the flowing medium, the generated thermal energy can be efficiently converted into the medium. At this time, since heat exchange is not performed in the primary combustion chamber, a decrease in combustion temperature in the primary combustion chamber can be prevented, so that a decrease in combustion efficiency can be prevented.
[0012]
Further, a seventh embodiment of the present invention is directed to the first embodiment.Or the secondIn the liquid fuel combustion heater according to the embodiment, the combustion temperature inside the secondary combustion chamber is higher than the combustion temperature inside the primary combustion chamber, so that the combustion temperature inside the secondary combustion chamber is 1500. Or more, and combustion can be more complete.
[0013]
Further, the eighth embodiment of the present invention is directed to the first embodiment.Or the secondIn the liquid fuel combustion heater according to the embodiment, air is supplied to the secondary combustion chamber to supply air.HoleIn this case, the combustion gas and air are agitated in the secondary combustion chamber to complete combustion.
[0014]
【Example】
Hereinafter, a liquid fuel combustion heater according to an embodiment of the present invention will be described with reference to the drawings.
1 is a side view of the liquid fuel combustion heater in the embodiment, FIG. 2 is a side sectional view of the liquid fuel combustion heater, FIG. 3 is a plan sectional view of the liquid fuel combustion heater, and FIG. FIG. 5 is a sectional view of the vicinity of a tertiary combustion chamber of the liquid fuel combustion heater, and FIG.
The main part of the liquid fuel combustion heater according to the present embodiment includes a primary combustion chamber 1, a secondary combustion chamber 2, a tertiary combustion chamber 3, an exhaust duct 4, and a use side medium passage 5.
[0015]
First, the structure of the primary combustion chamber 1 will be described.
The primary combustion chamber 1 includes a cylindrical combustion wall 11 that is vertically arranged, a bottom portion 12 that is connected to the combustion wall 11, and a lid portion 13 that closes an upper end of the combustion wall 11 so as to be openable and closable. An inspection port 14 and a fuel supply port 15 are provided near the bottom 12, and an air supply pipe 16 for supplying air into the primary combustion chamber 1 and an air supply pipe 16 for supplying air into the primary combustion chamber 1 are provided above the combustion wall 11. There is provided a primary combustion chamber outlet 17 for sending the combustion gas burned in the secondary combustion chamber 2 to the primary combustion chamber. In addition, although the combustion wall 11 is preferably cylindrical in terms of pressure resistance performance, it may be formed of a polygonal surface.
Further, inside the primary combustion chamber 1, a vertical air ejection pipe 18 is provided continuously with the air supply pipe 16 and is disposed at a position substantially passing through the central axis of the combustion wall 11, and at a lower end of the vertical air ejection pipe 18. A horizontal air ejection pipe 19 which is provided continuously and is disposed above the bottom 12. The vertical air ejection pipe 18 has many air ejection holes 18A. Five horizontal air ejection pipes 19 are radially arranged around the vertical air ejection pipe 18, and each of the horizontal air ejection pipes 19 has an air ejection hole 19 </ b> A on one side surface. Air is supplied to the air supply pipe 16 from an air blower fan (not shown). The air is supplied to an air ejection hole 18A provided in a vertical air ejection pipe 18 and an air ejection hole 19A provided in a horizontal air ejection pipe 19. From the primary combustion chamber 1. The horizontal air ejection pipe 19 may be provided with another air blowing fan without connecting the horizontal air ejection pipe 19 to the vertical air ejection pipe 18. Thus, by making the vertical air ejection pipe 18 and the horizontal air ejection pipe 19 independent of each other, it becomes easy to adjust the amount of air ejected from the vertical air ejection pipe 18 and the amount of air ejected from the horizontal air ejection pipe 19.
[0016]
Here, the positions of the air ejection holes 18A and 19A provided on the surfaces of the vertical air ejection pipe 18 and the horizontal air ejection pipe 19 will be described.
The vertical air ejection pipes 18 are provided with air ejection holes 18A at substantially equal intervals in a column, and the air ejection holes 18A are provided to be vertically displaced by a predetermined dimension from the positions of the adjacent air ejection holes 18A. Each of the horizontal air ejection pipes 19 is provided with a plurality of air ejection holes 19 </ b> A. These air ejection holes 19 </ b> A are ejected at spiral positions extending outward from the center of the primary combustion chamber 1. A hole 19A is provided. In addition, it is preferable that these air ejection holes 19A are holes that are directed obliquely upward. Also, the air ejection hole 18A is preferably a hole having an angle in one direction so as to rotate spirally. Also, the direction of the air ejection hole 18A and the air ejection hole 18A are adjusted so that the rotation direction of the vortex produced by the air ejected from the air ejection hole 18A and the rotation direction of the vortex produced by the air ejected from the air ejection hole 19A match. If the ejection direction of 19A is selected, a state where the combustion efficiency of the primary combustion chamber 1 is better can be obtained.
[0017]
Next, the structure of the secondary combustion chamber 2 will be described.
The secondary combustion chamber 2 is connected to the primary combustion chamber outlet 17 and has a secondary combustion chamber inlet 20 which is an intake of combustion gas burned in the primary combustion chamber 1, and an outer wall covering the secondary combustion chamber 2. 21, a combustion flow regulating plate 22 provided inside the secondary combustion chamber 2, and a secondary combustion chamber outlet 23 which is an outlet for combusted combustion gas. Each of the secondary combustion chamber inlet 20, the outer wall 21, and the secondary combustion chamber outlet 23 has a cylindrical shape. The secondary combustion chamber inlet 20 is connected to the upper end of one end of the outer wall 21, and the secondary combustion chamber outlet 23 is connected to the lower end of the other end of the outer wall 21. An air supply hole 24 for supplying air into the secondary combustion chamber 2 is provided around the secondary combustion chamber inlet 20. The combustion flow regulating plate 22 is provided in a spiral shape so that the center of rotation of the combustion flow moves in the horizontal direction. By providing the spiral combustion regulating plate 22 in this way, the combustion gas in the secondary combustion chamber 2 rotates in a spiral. The flow direction of the combustion gas is horizontal in the drawing, but may be inclined or vertical. In order to further increase the combustion efficiency in the secondary combustion chamber 2, it is preferable to provide the air supply holes 24 in the middle and rear ends of the secondary combustion chamber, for example, in the primary combustion chamber 1. It is preferable to provide a pipe having an air ejection hole similar to the vertical air ejection pipe 18 in the secondary combustion chamber 2 in the longitudinal direction.
[0018]
Next, the structure of the tertiary combustion chamber 3 will be described.
The tertiary combustion chamber 3 is covered with an outer wall 31 that covers the outside of the tertiary combustion chamber 3 and a partition 32 that forms the use-side medium passage 5, and has a tertiary combustion regulating plate 34 inside. The tertiary combustion chamber 3 is connected to the outlet 23 of the secondary combustion chamber, and is connected to the inlet 30 of the tertiary combustion chamber, which is an intake of the combustion gas burned in the secondary combustion chamber 2, and the exhaust duct 4. And a tertiary combustion chamber outlet 33. The combustion gas in the tertiary combustion chamber 3 goes upward from the tertiary combustion chamber inlet 30 provided at the lower part, but is diverted right and left by the partition wall 32. A tertiary combustion regulating plate 34 composed of a plurality of plates exists between the outer wall 31 and the partition plate 32 on both the left and right sides. Since each plate constituting the tertiary combustion regulating plate 34 is provided with a gap between the outer wall 31 at one end and the other end alternately, the combustion gas is supplied to the one end and the other end. Are alternately turned back and rise, and the combustion gas merges again at the tertiary combustion chamber outlet 33. The combustion gas guided to the tertiary combustion chamber outlet 33 passes through the exhaust duct 4 and is forcibly exhausted by an exhaust fan 35 provided in the exhaust duct 4. Note that the outer wall 31 and the partition 32 may be cylindrical.
[0019]
Next, the structure of the use side medium passage 5 will be described.
The use-side medium passage 5 is formed on the heat exchange unit outer wall 38 surrounding the secondary combustion chamber 2 and the tertiary combustion chamber 3, the space formed by the partition wall 32 of the tertiary combustion chamber 3, and the blow-out side of the hot air blower 36. And a hot air pipe 60 for sending out the obtained hot air. A punching metal 39 is provided between the hot air blowing unit 36 and the heat exchange unit outer wall 38.
[0020]
Hereinafter, a combustion method of the liquid fuel combustion heater according to the present embodiment will be described.
Waste oil serving as fuel is supplied from a fuel supply port 15 provided in the bottom portion 12 of the primary combustion chamber 1. The bottom 12 stores waste oil to be burned, and the bottom 12 functions as a combustion dish. Next, the combustion is started by supplying the ignition combustion material from the inspection port 14 onto the bottom portion 12 where the waste oil is stored. On the other hand, in the vicinity of the bottom portion 12, air is supplied from the air ejection holes 19A so as to rotate. The waste oil burns while being vaporized, and the combustion temperature rises as the combustion becomes active, and the air supplied from the air ejection holes 19A promotes the stirring of the combustion gas and the air.
Note that the combustion gas in the primary combustion chamber 1, the secondary combustion chamber 2, and the tertiary combustion chamber 3 is sucked by the exhaust fan 35, so that the combustion gas rises in the primary combustion chamber 1.
The combustion gas that rises in the primary combustion chamber 1 becomes a swirling flow, and the mixing of the air and the combustion gas is promoted, and the combustion is further promoted by the new air supplied from the air ejection holes 18A.
The combustion gas reaching the upper part of the primary combustion chamber 1 is introduced into the secondary combustion chamber 2 through the primary combustion chamber outlet 17 and the secondary combustion chamber inlet 20.
The combustion gas introduced into the secondary combustion chamber 2 flows in a swirling manner by the combustion flow regulating plate 22 and moves to the secondary combustion chamber outlet 23. At this time, new air is introduced from the air supply holes 24, and the swirling flow further promotes the agitation of the combustion gas and the air, so that the combustion becomes active and the combustion temperature becomes the maximum temperature of 1500 degrees or more. To rise. In addition, as a more effective method, the rotation direction of the vortex of the air ejected from the horizontal air ejection pipe 19 and the rotation direction of the vortex of the air ejected from the vertical air ejection pipe 18 are matched. Such an air vortex is superimposed on an upward airflow generated by combustion, and the combustion flow becomes an upward spiral spiral, and when an appropriate amount of air necessary for combustion is supplied, the combustion gas and the air are agitated. Effectively increases, the combustion temperature increases, and the combustion approaches more complete combustion.
[0021]
The combustion gas guided from the secondary combustion chamber outlet 23 to the tertiary combustion chamber inlet 30 is introduced into the tertiary combustion chamber 3 from below. The combustion gas introduced into the tertiary combustion chamber 3 rises between the outer wall 31 and the partition 32. At this time, the tertiary combustion regulating plate 34 provided between the outer wall 31 and the partition plate 32 causes the combustion gas to rise while alternately turning one end and the other end of the outer wall 31. Due to the flow of the combustion gas, the heat of the combustion gas is taken by the outer wall 31 and the partition plate 32 and reaches the exhaust duct 4 while lowering the combustion temperature. In addition, smoke generated particularly at the end of combustion is prevented from rising, and is accumulated in the lower part of the tertiary combustion chamber 3. Since the combustion is complete combustion, the waste oil is completely decomposed and a clean exhaust gas free of pollutants is obtained.
[0022]
On the other hand, the air blown into the warm air blower 37 by the warm air blower 36 becomes uniform wind pressure by the punching metal 39, and is generated in the space inside the heat exchange unit outer wall 38 surrounding the secondary combustion chamber 2 and the tertiary combustion chamber 3. It is guided to a certain use side medium passage 5. Then, while removing heat from the secondary combustion chamber 2 and the tertiary combustion chamber 3, the heat is drawn out of the warm air pipe 60 through the use side medium passage 5 formed by the space formed by the partition wall 32 of the tertiary combustion chamber 3. It is used for heating gardening houses and buildings.
[0023]
FIG. 6 shows another embodiment of the secondary combustion chamber. FIG. 6 is a side sectional view of a secondary combustion chamber according to another embodiment. Note that the same components as those in the above-described embodiment are denoted by the same reference numerals, and description thereof is omitted.
In the secondary combustion chamber 2B according to the present embodiment, the side of the outer wall 21B is constituted by four flat plates. Therefore, the outer wall portion 21B has a box-like configuration, and a combustion flow regulating plate 22B composed of a plurality of plates is provided inside. Since each of the plates constituting the secondary combustion regulating plate 22B is provided with a gap between the outer wall portion 21B on the upper end side and the lower end side alternately, the combustion gas flows between the one end side and the other end side. While alternately turning over, it flows from the secondary combustion chamber inlet 20 to the secondary combustion chamber outlet 23. According to the present embodiment, since the combustion gas is deflected in the flow direction while colliding with the combustion flow regulating plate 22B, the mixing of the air and the combustion gas is further promoted.
[0024]
FIG. 7 is a configuration diagram showing a state in which the liquid fuel combustion heating device according to one embodiment of the present invention is used for heating a greenhouse.
The pipe 61 connected to the hot air pipe 60 of the liquid fuel combustion heater 100 according to the present embodiment is branched by a pipe 62 into a soil pipe 63 and an upper space pipe 64. In this embodiment, three greenhouses 104, 106, and 108 are provided.
In the soil pipe 63, a plurality of soil pipes 63A, 63B, 63C, 63D, 63E, 63F, 63G, 63H are buried in the soil along the longitudinal direction of the greenhouses 104, 106, 108. . These underground pipes 63A, 63B, 63C, 63D, 63E, 63F, 63G, 63H warm the soil. The soil pipes 63B, 63C, 63D, 63E, 63F, and 63G are provided in the soil on the premises of the greenhouses 104, 106, and 108. The soil pipes 63A and 63H are respectively formed in the greenhouse 104, Outside the site of 108, they are provided along the longitudinal direction of the greenhouses 104 and 108. On the other hand, the pipes 65 and 67 are branch pipes from the underground pipe 63, and guide warm air to the upper space pipes 66 and 68, respectively.
In the space above the greenhouse 104, a plurality of upper space pipes 64A, 64B, 64C extend from the upper space pipe 64 in the longitudinal direction. Similarly, a plurality of upper space pipes 66A, 66B, 66C are extended from the upper space pipe 66 in the longitudinal direction in the space above the greenhouse 106, and the upper space A plurality of upper space pipes 68A, 68B, 68C extend from the upper space pipe 68 in the direction.
The connection of the piping is not limited to the above embodiment.
As shown in this embodiment, the use of a liquid fuel combustion heater for heating a greenhouse makes it possible to use the greenhouse in winter even in snowy areas. In particular, it is possible to stabilize the heating effect by warming the soil, and it is possible to prevent snow accumulation around the greenhouse by piping connected to the greenhouse.
[0025]
In the above embodiment, the case where air is used as the use-side medium has been described. However, hot water or steam can be used by using groundwater or the like. Further, in this embodiment, the case where the air in the atmosphere is heat-exchanged and supplied to the greenhouse has been described, but by circulating the air supplied into the greenhouse, the thermal efficiency is further increased. In particular, when hot water or steam is used, the circulation type is suitable. Further, the liquid fuel combustion heater described in the above embodiment may be installed in a greenhouse. When the liquid fuel combustion heater is installed in a greenhouse, the exhaust duct may be extended outside the greenhouse.
[0026]
【The invention's effect】
As described above, according to the present invention, by promoting the stirring of the combustion gas and the air and completely burning at a combustion temperature of 1500 ° C. or more, a clean exhaust gas containing no pollutants can be obtained, and 1.7 million kcal or more can be obtained. It is possible to provide a liquid fuel combustion heater that obtains rising thermal energy.
[Brief description of the drawings]
FIG. 1 is a side view of a liquid fuel combustion heater according to an embodiment of the present invention.
FIG. 2 is a side sectional view of the liquid fuel combustion heater according to the embodiment.
FIG. 3 is a plan sectional view of the liquid fuel combustion heater according to the embodiment.
FIG. 4 is a cross-sectional view around a tertiary combustion chamber of the liquid fuel combustion heater according to the embodiment.
FIG. 5 is a perspective view of a main part of an air ejection pipe of the liquid fuel combustion heater according to the embodiment.
FIG. 6 is a side sectional view of a secondary combustion chamber according to another embodiment of the present invention.
FIG. 7 is a configuration diagram showing a state in which the liquid fuel combustion heating machine according to one embodiment of the present invention is used for heating a greenhouse.
[Explanation of symbols]
1 Primary combustion chamber
2 Secondary combustion chamber
3 Tertiary combustion chamber
4 Exhaust duct

Claims (8)

A liquid fuel combustion heater having a primary combustion chamber that vaporizes and burns liquid fuel stored at a bottom portion, and a secondary combustion chamber connected to the primary combustion chamber,
The primary combustion chamber has a vertical combustion wall, a bottom part for storing liquid fuel, a primary combustion chamber outlet part connected to the secondary combustion chamber at an upper part of the combustion wall, and a substantially center of the primary combustion chamber. And a vertical air ejection pipe arranged in the
The secondary combustion chamber, a horizontal outer wall portion, a secondary combustion chamber inlet portion which is connected to the primary combustion chamber outlet portion and takes in combustion gas burned in the primary combustion chamber, and an inside of the secondary combustion chamber. A combustion flow regulating plate, and a secondary combustion chamber outlet, which is an outlet for combustion gas,
The secondary combustion chamber inlet is connected to one end of the outer wall, and the secondary combustion chamber outlet is connected to the other end of the outer wall,
A suction fan for guiding the combustion flow to the outside of the exhaust duct is provided downstream of the secondary combustion chamber,
A plurality of air ejection holes are provided in the horizontal air ejection tube,
The combustion flow regulating plate has a spiral shape,
In the primary combustion chamber, the combustion gas is swirled and raised by the air ejection holes, and in the secondary combustion chamber, the combustion gas reaching the upper part of the primary combustion chamber is discharged from one end of the secondary combustion chamber. A liquid fuel combustion warmer, which is rotated and moved by the spiral-shaped combustion flow regulating plate toward the other end . A liquid fuel combustion heater having a primary combustion chamber that vaporizes and burns liquid fuel stored at a bottom portion, and a secondary combustion chamber connected to the primary combustion chamber,
The primary combustion chamber has a vertical combustion wall, a bottom part for storing liquid fuel, a primary combustion chamber outlet part connected to the secondary combustion chamber at an upper part of the combustion wall, and a substantially center of the primary combustion chamber. And a vertical air ejection pipe arranged in the
The secondary combustion chamber, a horizontal outer wall portion, a secondary combustion chamber inlet portion which is connected to the primary combustion chamber outlet portion and takes in combustion gas burned in the primary combustion chamber, and an inside of the secondary combustion chamber. A combustion flow regulating plate, and a secondary combustion chamber outlet, which is a combustion gas outlet,
The secondary combustion chamber inlet is connected to one end of the outer wall, and the secondary combustion chamber outlet is connected to the other end of the outer wall,
A suction fan for guiding the combustion flow to the outside of the exhaust duct is provided downstream of the secondary combustion chamber,
A plurality of air ejection holes are provided in the horizontal air ejection tube,
The combustion flow regulating plate comprises a plurality of plates,
In the primary combustion chamber, the combustion gas is swirled and raised by the air ejection holes, and in the secondary combustion chamber, the combustion gas reaching the upper part of the primary combustion chamber is discharged from one end of the secondary combustion chamber. A liquid fuel combustion warmer characterized in that the flow direction is refracted by the combustion flow regulating plate and moved toward the other end. Place the horizontal air jet pipe before Symbol bottom, wherein the horizontal air jet pipe, according to claim 1 or claim, characterized in that the primary combustion chamber of the combustion gas is provided an air ejection hole that rotates spirally 3. The liquid fuel combustion heater according to 2 . The liquid fuel combustion heater according to claim 1 or 2, wherein a tertiary combustion chamber is provided at an outlet of the secondary combustion chamber of the secondary combustion chamber. Liquid fuel combustion heating apparatus according to claim 4, characterized in that it has a configuration in which an increase of the combustion flow toward from bottom to top in the previous SL tertiary combustion chamber. A structure in which a utilization side medium passage is provided around or inside the secondary combustion chamber and the tertiary combustion chamber, and heat generated in the secondary combustion chamber and the tertiary combustion chamber is transmitted to a medium flowing through the utilization side medium passage. The liquid fuel combustion heater according to claim 4 , wherein 3. The liquid fuel combustion heater according to claim 1, wherein a combustion temperature inside the secondary combustion chamber is higher than a combustion temperature inside the primary combustion chamber. The liquid fuel combustion heater according to claim 1 or 2 , wherein an air supply hole for supplying air is provided in the secondary combustion chamber.

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