JP3793848B2 - Carbon dioxide generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a carbon dioxide generator for promoting and improving the growth of greenhouse-grown plants for use in a greenhouse for horticulture (hereinafter simply referred to as a greenhouse), and particularly to an improvement in a carbon dioxide blowing mechanism created by the same. .
[0002]
[Prior art]
It is known that generating carbon dioxide in a greenhouse and spreading it in the greenhouse promotes plant photosynthesis, helps the plant grow, supports fruit ripening, and improves its taste.
[0003]
The present applicant filed a design application for a carbon dioxide generator for cultivation in 1974, which was registered as Design No. 498627 on December 21, Sho 53. FIG. 8 is a front view of the design gazette shown in the design gazette, in which 40 is a carbon dioxide generator, 41 is a fueling unit, 42 is a combustion unit, 43 is a combustion gas outlet, and 44 is a can body. 45 is a combustion gas reservoir, 46 is a combustion gas and greenhouse air mixing unit, 47 is a carbon dioxide gas outlet, 48 is a blower, and 49 is a fan.
[0004]
The present applicant further developed a plant growing apparatus for greenhouses and filed a utility model registration application therefor, and this application was published as utility model application publication No. Sho 62-35319. Figure 9 is a whole front view partially broken away and, listed the device in this publication as the first view, in the figure, each part of the code is when shown underlined code that appears in the publication, 1 Heater main body, 2 is a combustion chamber incorporated in the main body, 3 is a chimney connection port, 4 is a burner, 5 is a fan for combustion air, 6 is a fuel gas supply pipe, 7 is a main valve of a combustor for heating, 8 Is a solenoid valve for a carbon dioxide generator, 9 is a main blower, 10 is a hot air outlet, 11 is a combustion air intake of a carbon dioxide generator, 12 is an air supply duct, 13 is a carbon dioxide generator, 16 is a mounting flange, 17 Is a combustion cylinder for generating carbon dioxide gas, 18 is a protective cylinder, 20 is a heating device, 21 is a flow path, and 22 is a greenhouse. In the illustrated apparatus, a combustion cylinder 17 for generating carbon dioxide gas is provided between the main blower 9 and the hot air outlet 10 so as to open into the flow path 21 , and air to the combustion cylinder 17 is provided. The air intake 11 of the supply duct 12 is opened near the air outlet of the blower 9 . In this apparatus, a warmer for a greenhouse and a carbon dioxide generator are used together in one apparatus. (Underline added)
[0005]
The applicant has conducted other prior art searches and found the following prior examples.
Patent application publication No. 50-576 for carbon dioxide generator for plant growth (Notification-January 10, 1975)
In the carbon dioxide generator, referring to the description of the claims and adding the underline to the reference numerals of the respective parts, the combustion cylinder 3 is arranged in the outer cylinder 1 of the carbon dioxide generator with a space around the circumference. The air swirl vane 5 is provided at the outer periphery of the rear portion of the combustion cylinder, the combustor 6 is mounted at the center, the air supply port 7 is provided outside the combustor body, and the damper 8 is opened and closed. In addition, a fuel injection nozzle 9 and an ignition electrode 11 are disposed at the center thereof, a fuel swirl vane 12 is provided in front of the fuel injection nozzle 9 , and phototubes 17 and 18 for confirming ignition are provided. On the other hand, the fuel pump 21 is connected via the electromagnetic valve 22 , and the blower 18 is installed behind the combustor 6 , and these are connected to the terminal plate 31 via the magnet switches 29 , 29 ' and the relay, respectively. And is connected to the timer 30 . (Underline added)
[0006]
Carbon dioxide gas supply device for plant growth Utility model application publication No. 50-3463 (public notice-January 29, 1975)
This carbon dioxide supply device is provided with a heat radiating cylinder 2 at the front end of an outer cylinder 1 , a combustion inner cylinder 3 is installed at an appropriate interval in the interior thereof, and a combustor 8 is installed at the center of the rear end thereof. The outer cylinder is provided with swirl vanes 7 that swirl the air sent from the blower installed at the rear, and the collecting cylinder 4 is installed at the tip of the combustion inner cylinder 3 , and a cone corresponding to the outlet is provided. The strip receiving shade 5 is supported by leg pieces 6 so that it can be adjusted forward and backward. (Underline added)
[0007]
Patent application publication No. 51-26338 for carbon dioxide supply device for plant growth (Notification-August 5, 1976)
According to the first aspect of the present invention, the device is provided around the jet outlet while sucking and mixing air from the primary air supply hole ( 5 ) after the gas supplied through the gas pipe is throttled. The air is further sucked from the secondary air supply hole ( 8 ), and then this gas is made to strike the fire source, and the combustion gas is blown out and diffused into the greenhouse together with the blowing of the fan (19) . (Underline added)
[0008]
Carbon dioxide generator patent application publication No. 54-13372 (public notice-No. 13372 in 1979)
This apparatus includes a combustor 5 at a rear end portion, an inner cylinder combustion chamber 3 composed of an inner wall 1 having an open front end portion, an inner wall 1 and an outer wall 2 that surrounds the periphery and is closed at both ends. And an outer cylinder combustion chamber 4 that communicates with the opening of the inner cylinder combustion cylinder 3 , a reheating chamber 6 that is orthogonal to the outer cylinder combustion chamber and that has an open upper end, and the outer cylinder combustion chamber 4 and the an outer cover plate 7 forward opened cover the outer at appropriate gap between the heating chamber 6, this is arranged in front open end of the outer cover plate 7, the outer cover plate 7 the outer wall 2 and reheating chamber 6 , a dilution fan 8 for blowing air to and from the air duct 17 , an air conduit 17 for introducing a part of the air that has passed between the outer cover plate 7 and the outer wall 2 to the air intake port 16 of the combustor 5 , A mixing chamber 9 for mixing and discharging the gas discharged from the outlet opening of the reheating chamber 6 and the air from the dilution blower is provided. (Underline added)
[0009]
C02 supply and heating device utility model application publication No. 7-42604 in the house (release date-August 11, 1995)
In the configuration of the apparatus disclosed here, a side pipe 12 for returning a part or all of the exhaust gas into the house is provided in the chimney 10 of the heater 1 . The side pipe 12 is provided with a catalytic combustion device 13 for reburning exhaust gas by the catalyst 16 . Moreover, this catalyst device may be provided in the chimney 10a , or may be provided on the outer peripheral portion of the chimney 13b . (Underline added)
[0010]
[Problems to be solved by the invention]
The carbon dioxide generator according to the above-mentioned registered design of the present applicant is an apparatus exclusively for the generation of carbon dioxide, but the carbon dioxide is blown out in the direction of the arrow a, that is, in the horizontal direction as shown in FIG. . Since carbon dioxide has a temperature of about 95 ° C. when the temperature in the greenhouse is 20 ° C. at the outlet, it cannot prevent high temperature damage to the plant unless it is 3 m to 5 m from the outlet to the cultivated plant. This has the problem that the part of the greenhouse is not fully utilized. Further, the carbon dioxide gas is required not to contain carbon monoxide, hydrocarbons and the like.
[0011]
In the apparatus shown in FIG. 9, the warm air for heating the greenhouse is mixed with about 900 ° C. carbon dioxide generated by the combustion cylinder 17 for generating carbon dioxide gas and blown out from the hot air outlet 10 in the horizontal direction. Occurs. This is an inevitable problem in blowing hot air in the lateral direction (horizontal direction).
[0012]
The apparatus shown in FIG. 9 is a combination of a warm air generator for greenhouse heating and carbon dioxide generation for plant growth, and has the advantage that two objectives can be achieved with one apparatus, while in the greenhouse heating. If a problem occurs in any one of the parts, the operation of the entire apparatus must be stopped to adjust the problem. The warming of the greenhouse is required at night in the winter, and interrupting the operation of the warmer at that time causes great losses. From the standpoint of continuing the greenhouse warming and the supply of carbon dioxide for plant growth without interruption, it would be better to provide both separately.
[0013]
[Means for Solving the Problems]
An object of the present invention is to provide a combustion section provided outside the longitudinal side surface of a rectangular box formed by long and short pieces, leaving a gap inside the box, and further, the heat shielding plate and the shielding inside thereof. A cylindrical can body is installed at a predetermined distance from the hot plate, a blower is disposed below the can body via a partition plate, and an end portion far from the combustion portion in the can body is arranged in the vertical direction of the can body. An extended hollow rectangular exhaust part is provided, and a combustion gas suction hole is formed on the side surface of the long side that is the back side and both side surfaces of the short side that is connected to the side of the exhaust part. The carbon monoxide and hydrocarbons contained by the heat of the flame are burned out into carbon dioxide gas that does not contain them, and then enters the carbon dioxide gas receiving section, where it is blown by the carbon dioxide gas guide plate in the direction of the hole in the upper mixing plate. Into the mixing space above the mixing plate and the blower sucks The air in the greenhouse is mixed with carbon dioxide in the mixed space between the mixing plate and the heat shield plate under the ceiling of the box through the can surrounded by the heat shield plate. The problem is solved by providing a carbon dioxide generator characterized by being discharged into the greenhouse from the outlet of the outlet elbow.
[0014]
[Action]
Combustion within the can 11 is not sufficiently mixed with the combustion air, and a concentration containing carbon monoxide is produced, and the combustion gas discharged from the can 11 rises in the exhaust section 13. Even if carbon monoxide or the like is contained in the exhaust gas, it is thoroughly agitated with the combustion air in the exhaust part 13 to eliminate the light and darkness. The carbon dioxide gas enters the carbon dioxide gas receiving portion 15 as a high-quality carbon dioxide gas, and passes through the gap between the circular plate 17a of the mixing plate 17 and the mixing plate 17 and the heat shield plate 21 when viewed from the front by the carbon dioxide gas guide plate 16. 17 is enclosed in a mixed space 18 between the heat shield top plate 21a. The air in the greenhouse is sent into the mixing space by the blower 26, and the high-temperature combustion gas of about 900 ° C. and the air in the greenhouse of about 20 ° C. are sufficiently mixed. It enters the outlet elbow 23 and is discharged from the outlet 24 into the greenhouse.
[0015]
【Example】
FIG. 1 is a side cross-sectional view of a carbon dioxide gas generator according to the present invention, taken along the center of a can body, FIG. 2 is a rear cross-sectional view of the back of the exhaust section cut away from an end portion far from the combustion section of the can body, and FIG. 4 is a side sectional view and a rear sectional view of the carbon dioxide generator with the heat shielding plate 21 cut away. FIG. 5 is a plan view of the heat shielding top plate 21a at the upper end of the box housing the can. FIG. It is a top view of the mixing plate 17 provided between the heat shield top plate 21a and the can body 11. In the figure, 10 is a carbon dioxide gas generator, 30 is a combustion section developed and manufactured by the present applicant, and 31 is Burner blower, 32 is a fuel supply port for the burner (piping is not shown), 33 is a flange for fixing the combustion part and the can body, 34 is a blast tube for forming a flame, and these parts are the combustion part. Composed.
[0016]
Reference numeral 20 denotes a box body having a height of 1100 mm, a depth of 600 mm, and a width of 430 mm. Reference numeral 23 denotes an air outlet elbow that is freely attached to an elbow attachment portion 22 provided on the ceiling 20a of the box body. As shown in FIGS. 1 to 4, a cylindrical can body 11 is arranged in the box body 20, and an end portion of the can body 11 that is far from the combustion unit 30 is a heat shield plate 21 inside the box body 20. And maintaining a predetermined gap (FIG. 1). Reference numeral 12 denotes a flame formed by the combustion part 30, and 13 is a hollow hexahedron exhaust part arranged extending in the vertical direction of the can body 11 at the tip extension part of the flame 12. As shown in FIG. 2, combustion gas suction holes 14 are formed in the vertical direction in six rows in the vertical direction on the side surface of the long piece, and both in parallel with the flame direction of the exhaust portion 13. As shown in FIGS. 1 and 7, six combustion gas suction holes 14 are formed on the short piece side surface in the vertical direction. The fuel is burned in the can 11 to become a combustion gas. At this stage, the fuel is not sufficiently mixed with the combustion air, and a concentration containing carbon monoxide is formed. The air is sucked into the exhaust part 13 and is sufficiently stirred with the combustion air while moving upward in the exhaust part 13, so that the density of the exhaust is increased by the heat of the flame 12 and the exhaust part 13 is heated to 900 ° C. or higher. Carbon oxides, hydrocarbons, etc. are completely burned out and become high-quality carbon dioxide. An upper end portion of the exhaust part 13 is a carbon dioxide gas receiving part 15, and a carbon dioxide gas guide plate 16 extending from the upper right side to the upper left side as viewed in FIG. 1 is formed, which comes from the gas receiving part 15. The carbon dioxide gas is designed to be blown toward a circular hole 17a formed at the center of the mixing plate 17 opened downward in a U-shaped cross section provided on the upper side.
[0017]
In FIG. 2, part of the carbon dioxide gas released from the carbon dioxide receiving part 15 passes through the circular hole 17a, and the other collides with the vicinity of the circular hole 17a of the mixing plate 17, and the circular hole 17a, the mixing plate 17 and the heat shield plate. The mixture space 18 between the mixing plate 17 and the heat-shielding top plate 21a is entered through the gap with 21.
[0018]
Below the can 11, a blower 26 is arranged via a partition plate 25. The blower 26 sucks air in the greenhouse through an air hole 27 opened in the box 20, and the sucked air is a blower opening of the blower 26. As shown by the arrow b in FIG. 4 from 26 a, it flows upward between the can 11 and the heat shield plate 21, collides with the mixing plate 17, and the circular hole 17 a in the center of the mixing plate 17 and the outer edge of the mixing plate 17 And enters the mixing space 18 through the gap between the heat shield 21.
[0019]
The greenhouse air sent by the blower 26 and the carbon dioxide gas combusted in the can 11 and blown out from the carbon dioxide receiving part 15 collide with the mixing plate 17 to mix them. By narrowing the cross section of the flow path to increase the flow velocity and repeating the mixing in the mixing space 18, a carbon dioxide mixed gas having no concentration and temperature is obtained. In this process, the high-temperature carbon dioxide gas at about 900 ° C. and the air in the greenhouse at about 20 ° C. are sufficiently mixed from the carbon dioxide receiving part 15 to become a carbon dioxide gas mixture at about 80 ° C.
A hole 21b that opens to the heat shield top plate 21a is formed directly below the elbow mounting portion 22 provided on the ceiling 20a of the box, and the greenhouse air and carbon dioxide mixed in the mixed space become a carbon dioxide mixed gas. Then, the air is discharged from the air outlet 24 through the air outlet elbow 23 into the greenhouse from the air outlet 24.
[0020]
Since the air outlet elbow 23 can be freely attached to the elbow attachment portion 22, the air outlet 24 can be set to a desired direction of 360 degrees. Since the carbon dioxide mixed gas is sufficiently mixed in the mixing space 18 of the box 20 and is sent to the outlet elbow 23 as warm air of about 80 ° C., the difference in temperature and concentration due to the difference in direction of the outlet 24 is No matter which direction is set, a uniform carbon dioxide gas mixture can be supplied into the greenhouse. Since the temperature of the hot air blown out is about 80 ° C., there is no risk of burns even in the hot air.
[0021]
Since the carbon dioxide gas generator has a rectangular box body 20 with the longitudinal direction vertical and a blower outlet elbow 23 attached to the ceiling 20a of the box body, it does not require many places for installation, and is about 80 ° C. Since warm air is blown horizontally from a height of just over 1 m, it is possible to give high temperature damage to crops by leaving about 1 to 3 m for tall crops and 0.5 to 1 m for low crops. This reduces the amount of wasted land where crops cannot be made.
[0022]
A heat shield plate 21 is provided inside the box body 20, and the greenhouse air discharged from the blower 26 is designed to flow between the heat shield plate 21 and the box body 20 that houses the can body 11. The radiant heat from 11 can be blocked, and the radiant heat can be prevented from going out of the carbon dioxide generator. Even on the exhaust part side where the temperature of the can 11 is the highest, the radiant heat of the can 11 is transmitted to the heat shield 21, but the heat of the heat shield is exchanged with the greenhouse air by the blower 26, so that the box The heat transmitted to 20 does not reach a high temperature, the surface of the box 20 is not burned by heat, and there is no risk of burns even if a person touches the box 20.
The combustion noise generated when the flame 12 is generated by the combustion unit 30 is reduced by the exhaust unit 13 and further reduced by the heat shield plate 21, so that the noise can be reduced.
[0023]
【The invention's effect】
As described above, according to the present invention,
(1) An exhaust portion 13 is provided at the position of the tip extension portion of the flame 12 in the can body 11, the combustion gas is taken in from the side surface and the rear surface of the exhaust portion 13 when viewed in the flame traveling direction, and the combustion gas is taken into the exhaust portion 13. Can produce high-quality carbon dioxide gas that does not contain carbon monoxide and hydrocarbons,
(2) A mixing plate 17 forming a circular hole 17a in the center is provided so that there is a gap for ventilation on both sides in the longitudinal direction of the can body 11, and the outlet of the exhaust part 11 is sprayed toward the circular hole 17a. Since the carbon dioxide gas guide plate 16 is provided as described above, a carbon dioxide gas mixture of about 80 ° C. is discharged into the greenhouse with no deviation in temperature and concentration regardless of which direction the blowout of the blowout outlet 24 of the blowout elbow 23 is directed 360 degrees. There is no worry of burns from hot air,
(3) Since the outlet elbow 23 is attached to the rectangular box 20 with the longitudinal direction vertical and the ceiling 20a of the box, and the temperature of the carbon dioxide mixed gas blown out from the outlet 24 is about 80 ° C. Because it is not necessary to give high temperature damage to the crops by leaving a distance of about 1 to 3 m for tall crops and a distance of 0.5 to 1 m for low crops, there is as little wasteful land that crops cannot be made as much as possible Can
(4) By providing a heat shield plate 21 inside the box 20, the radiant heat from the can 11 can be blocked and the radiant heat can be prevented from going out of the carbon dioxide generator. The surface is not burned by heat, and there is no risk of burns even if a person touches the box 20,
(5) By providing the exhaust part 13 at the combustion gas outlet of the can 11 and providing the heat shield plate 21 inside the box 20, the combustion noise can be reduced.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a carbon dioxide generator according to the present invention, in which a central portion of a can body is cut.
2 is a rear cross-sectional view of the rear portion of the can body of the carbon dioxide generator shown in FIG. 1; FIG.
FIG. 3 is a side cross-sectional view of the carbon dioxide generator according to the present invention in which a part of the heat shield plate is cut away.
4 is a rear cross-sectional view of the carbon dioxide generator of FIG. 3. FIG.
FIG. 5 is a plan view of a heat shielding top plate of the carbon dioxide generator according to the present invention.
FIG. 6 is a plan view of a mixing plate of a carbon dioxide generator according to the present invention.
FIG. 7 is a perspective view in which a part of a can body of the carbon dioxide generator according to the present invention is cut away.
FIG. 8 is a side sectional view showing a conventional carbon dioxide generator.
FIG. 9 is a side sectional view showing another conventional carbon dioxide generator.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Carbon dioxide generator 11 Can 12 Flame 13 Exhaust part 14 Combustion gas suction hole 15 Carbon dioxide receiving part 16 Carbon dioxide guide plate 17 Mixing plate 17a Circular hole 18 Mixing space 20 Box 20a Ceiling 20b Hole 21 Heat shield plate 21a Thermal plate 22 Elbow mounting portion 23 Blowout outlet elbow 24 Blowout opening 25 Partition plate 26 Blower 26a Blower 27 Air hole 30 Combustion section 31 Burner blower 32 Fuel supply port 33 Flange 34 Blast tube

Claims (1)

A combustion part (30) is provided outside the longitudinal side surface of the rectangular box (20) formed by the long piece and the short piece, leaving a gap inside the box (20) and the heat shield plate (21). Further, a cylindrical can body (11) is installed at a predetermined distance from the heat shield plate (21), and a blower (26) is provided below the can body (11) via a partition plate (25). Is placed,
A hollow rectangular exhaust part (13) extending in the vertical direction of the can body (11) is provided at an end portion far from the combustion part (30) in the can body (11), and the rear face against the flame of the exhaust part Combustion gas suction holes (14) are formed on the side surface of the long piece and the side surfaces of the two short pieces connected thereto, and the combustion gas is contained by the heat of the flame (12) while moving upward in the exhaust part (13). Carbon oxides and hydrocarbons are burned out and become carbon dioxide gas that does not contain them, and enters the carbon dioxide gas receiving part (15) from there in the direction of the circular hole (17a) of the upper mixing plate (17) by the carbon dioxide gas guide plate (16). Sprayed into the mixing space (18) above the mixing plate (17),
The greenhouse air sucked in by the blower (26) passes around the can (11) surrounded by the heat shield (21) and is shielded under the ceiling (20a) of the mixing plate (17) and the box (20). Carbon dioxide gas is mixed in the mixing space (18) with the hot plate (21a), and the mixed gas is discharged into the greenhouse from the outlet (24) of the outlet elbow (23). Carbon dioxide generator.

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