JPH07312985A - Local air-conditioner for plant growth chamber - Google Patents

Abstract

PURPOSE:To provide a local air-conditioner for plant growth chamber, capable of saving energy without reducing workability in a facility. CONSTITUTION:This air-conditioner 3 is equipped with a mobile air-conditioning duct attached above a plant culture bed 2 and the mobile duct 6 can be guided and moved along one or more guide rails 7. The mobile duct 6 is connected through a flexible duct 6B to the air outlet of this air-conditioner and the mobile duct 6 has a built-in type humidifier unit. In addition, free movement of the mobile duct over the space above the plant culture bed enables local air-control of only the plant culture area and this air-conditioner can, therefore, save energy in comparison with the conventional whole air-conditioning type. Further, air- conditioning + moistening mode, moistening mode, ventilation mode, etc., can be selected in operation of this air-conditioner and an effective air-conditioning is, therefore possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a local air conditioner for a plant cultivation room, and more particularly to an air conditioning system which provides an environment and energy saving necessary for cultivating plants.

[0002]

2. Description of the Related Art Conventionally, as a system for locally air-conditioning a greenhouse for cultivating plants, for example, a "greenhouse for cultivating plants" described in Japanese Examined Patent Publication No. 6-4005 is known. Zone air conditioning using vinyl curtains with adjustable space is disclosed. Also, the actual Kaisho 52-1
"Plant cooling device" described in Japanese Patent No. 21950 discloses a device in which a member surrounding the vicinity of a plant is provided and an air conditioning duct is arranged in this space.

Further, in "Cooling device for greenhouse" described in Japanese Patent Laid-Open No. 52-121951, there is disclosed a device for forming a cool air curtain by blowing and sucking cool air on the side surface of the greenhouse. Furthermore, as an example of local air conditioning,
For example, in "Local cooling device and local effective liquid application device in a building for plant cultivation" described in Japanese Patent Application Laid-Open No. 4-16131, a small house is configured in a greenhouse, and a ventilation duct is introduced to the small house to locally An example of cooling is disclosed.

FIG. 9 is a schematic configuration diagram showing a conventional air conditioner for a plant cultivation room. In FIG. 9, 1 is a greenhouse wall of a building that constitutes a plant cultivation room, 1a is a side window provided on the side wall of the wall, 1b is a skylight provided on the roof of the wall, and 1c is an interior of the wall. Vinyl or light-shielding material. Reference numeral 2 indicates a plant cultivation bed, and 2a indicates a plant body grown on the plant cultivation bed 2. 3 is an air conditioner installed in the plant cultivation room, 6A
Is an air conditioning duct for supplying cold air from the air conditioner 3 onto the plant cultivation bed 2. That is, the local air conditioning was performed by supplying the cool air to the plant cultivation bed 2 in the limited area by the air conditioning duct 6A.

[0005]

Conventionally, when various devices such as a light-shielding curtain, a heat-retaining curtain, and an irrigation system are installed in a plant cultivation room, the conventional air-conditioning duct (6A shown in FIG. 9) is also an obstacle. However, there were problems such as obstruction of solar radiation. Further, the above-mentioned Japanese Patent Laid-Open No. 52-121951
The air curtain provided with the cold air at both ends of the greenhouse described in Japanese Patent Publication has a large temperature distribution around the plant body depending on the scale of the greenhouse and the positions of the airflow and the suction. In addition, there remains a problem in that the hot air above the greenhouse is agitated.

When the plant cultivation room as shown in FIG. 9 is air-conditioned, when the greenhouse wall 1 is cooled in a closed greenhouse using a transparent heat insulating wall, the upper part of the greenhouse forms temperature stratification due to solar radiation. In the vicinity of the ceiling, there is a high temperature of 70 ° C or more in summer, so conventionally, without considering this, the entire greenhouse was stirred and cooled, so the load increased,
It was difficult to save energy.

Further, in the case of performing air conditioning, for example, the plants actually cultivated in the greenhouse are generally around 50 to 70% in consideration of the working space with respect to the floor area of the greenhouse.
However, when this is air-conditioned, the entire greenhouse is often air-conditioned, which is problematic in terms of energy saving. It was zone air conditioning and local air conditioning as described in the above Japanese Patent Publication No. 6-4005 that tried to improve this, and means for reducing the inside of the facility into small blocks are disclosed, but the energy saving effect is disclosed. Was not considered to be insufficient.

The present invention has been made to solve the above-mentioned problems of the prior art, and does not impair the workability in the facility,
Moreover, it aims at providing the local air conditioner of a plant cultivation room which can plan energy saving.

[0009]

In order to achieve the above-mentioned object, the structure of the first invention relating to the local air conditioner for the plant cultivation room of the present invention is an air conditioner for a plant cultivation room, in which the upper part of the plant cultivation bed is In addition, a movable air conditioning duct is provided. More specifically, the movable air conditioning duct is guided by at least one guide rail to move, and the movable air conditioning duct is connected to the blowout part of the air conditioner by a flexible duct. There is. In addition, a humidifying means is incorporated in a movable air conditioning duct, and a control circuit that switches between air conditioning independent operation by the movable air conditioning duct, simultaneous operation of air conditioning and humidification, humidification independent operation, and blowing operation is provided. Is.

In order to achieve the above object, the second aspect of the invention relating to the local air conditioner for the plant cultivation room of the present invention is for air conditioning the plant cultivation room, wherein an air conditioning duct is provided above the plant cultivation bed. Provided, a return duct is provided at either the lower part or the side part of the plant cultivation bed, and between the air conditioning duct and the return duct, an air curtain of horizontal airflow is formed along the upper surface of the plant cultivation bed. It is the one.

Further, in order to achieve the above object, the structure of the third invention relating to the local air conditioner of the plant cultivation room of the present invention is an air conditioner for a plant cultivation room in a cultivation zone in which a plant cultivation bed exists. The upper part of the bed for plant cultivation is partitioned by a transparent material, the lower part of the bed is partitioned by an opaque material, and an air conditioning duct is arranged on the upper surface of the cultivation bed.

Furthermore, in order to achieve the above object,
The configuration of the fourth invention related to the local air conditioner for the plant cultivation room of the present invention is to air-condition the plant cultivation room, wherein an outside air introduction part is provided on the side wall forming the plant cultivation room and an exhaust part is provided on the ceiling part. An air curtain is formed in a space area above the cultivation bed, and a local air conditioning duct is provided below the air curtain. More specifically, the outside air introduction part of the side wall is provided with height differences in a plurality of steps, and by selecting one of the plurality of steps of the outside air introduction part, the air is brought to the desired height of the plant cultivation bed upper space region. A curtain can be formed.

[0013]

The function of each of the above technical means is as follows. According to the first aspect of the present invention, the movable duct makes it possible to intermittently blow cool air to a specific plant without impairing workability. In addition, a moving duct incorporating a humidifying and irrigating device allows effective local air conditioning.

According to the second invention, since the air curtain of the horizontal airflow is formed along the upper surface of the plant cultivation bed between the air conditioning duct and the return duct, it is possible to cut off the cultivation part and the upper part of the greenhouse. Only the cultivated plant or its vicinity can be locally cooled, and energy can be saved.

According to the third aspect of the present invention, the periphery of the cultivation zone where the plant cultivation bed is present is partitioned by a transparent material such as a curtain, and the lower part of the bed is partitioned by a material that shields sunlight, so that the temperature can be improved especially during cooling operation. Due to the stratification effect, the cooling air stays only in the vicinity of the plant body, and the energy saving effect is great.

According to the fourth aspect of the invention, since the air curtain is formed in the upper space region of the plant cultivation bed and the local air conditioning duct is provided under the air curtain, the air curtain having the heat exhausting effect and the air curtain lower part are provided at the same time. Local cooling can be used together, and energy saving can be achieved as compared with conventional general air conditioning.

[0017]

Embodiments of the present invention will be described below with reference to FIGS. First, an embodiment of the first invention will be described with reference to FIGS. [Embodiment 1-1] FIG. 1 is an explanatory view of a local air conditioner according to an embodiment of the first invention, (a) is a perspective view showing a configuration of a moving duct, and (b) is (a). FIG. The plant cultivation room to which the present embodiment is applied is a building such as the greenhouse wall body 1 shown in FIG. 9, and the illustration thereof is omitted.

In FIG. 1, 2 shows a part of the plant cultivation bed in an arbitrary zone in the plant cultivation chamber. 3 is an air conditioner installed in the plant cultivation room, 6 is a movable air conditioning duct (hereinafter referred to as a moving duct) for supplying cool air from the air conditioner 3 onto the plant cultivation bed 2, and 6a is a blowout of cold air. Holes, 6B are flexible ducts that can be expanded and contracted, 7 is a guide rail for moving the moving duct 6, and 8 is a suspender for the moving duct 6, which engages with the guide rail 7 and slides. Is. Here, the shape and dimensions of the moving duct 6 are determined by the cultivating device in the plant cultivation room to be installed and the load conditions, but in general, many of them have a circular cross section,
It is made of a material such as polyethylene that is opened in transparent vinyl, or a non-woven fabric.

The movable duct 6 is guided and moved by at least one guide rail 7, and the movable duct 6 is connected to the blowout portion of the air conditioner 3 by a flexible duct 6B. The operation of such a local air conditioner will be described. After the heat of the cooling air is exchanged by the air conditioner 3, it passes through the flexible duct 6B and the moving duct 6 and is blown from the blowout holes 6a to the plants 2a on the plant cultivation bed 2. The moving duct 6 is guided by the guide rails 7 via the suspenders 8 and can be moved onto the plant cultivation bed 2 in a desired zone.
By moving the moving duct 6 on the plant 2a, local air conditioning can be performed.

[Embodiment 1-2] FIG. 2 is an explanatory view of an apparatus in which humidifying means is provided in a moving duct according to another embodiment of the first invention. (A) is a configuration diagram of the moving duct, b) is
It is a B arrow view of (a), It is a side view of a water supply pipe part. In the figure, the same reference numerals as those in FIG. 1 indicate the same parts. In FIG. 2, 9 is a water supply pipe, 9a is a nozzle for water supply, and 6a is an outlet for cooling air. The moving duct 6 shown in FIG. 2 has a humidification / irrigation means built-in structure, and the water supply pipe 9 arranged in the moving duct 6 is not shown.
It is connected to a water supply tank via a water supply pump and a flexible tube. Further, although not shown, it is applicable to a plurality of rows of cultivation beds by adjusting the position of the water supply nozzle, the material of the blowing duct and the blowing hole.

The operation of the local air conditioner shown in FIG. 2 will be described. The operation control pattern is ON-OF of the air conditioner.
F, ON / OFF of the humidifier, and various sensors (not shown) are combined to selectively operate the air conditioner independent operation mode, the air conditioning + humidification operation mode, and the air blowing operation mode.

According to each embodiment of the first aspect of the present invention, the moving duct 6 freely moves in the upper space of the plant cultivation bed 2 so that only the plant cultivation zone can be locally air-conditioned, and the conventional whole air conditioning can be realized. Compared with the energy saving effect. Also,
The upper part of the cultivation surface can be effectively used. Further, the moving duct and the humidifying / irrigating means can be integrated to improve workability, and the air conditioning + humidifying mode, the humidifying mode, and the blowing mode can be selectively operated, and effective air conditioning can be performed.

Next, a second embodiment of the invention will be described with reference to FIGS.
Will be described with reference to. [Embodiment 2-1] FIG. 3 is a schematic configuration diagram of a local air conditioner for a plant cultivation room according to an embodiment of the second invention. Figure 3
In, 1 is a greenhouse wall, 2 is a plant cultivation bed, 11
Is a blowout duct related to the air conditioning duct, 12 is a return duct, and 13 is an air curtain. That is, in the local air conditioner of the present embodiment, the blowout ducts 11 are provided in the middle upper part of the plant cultivation beds 2 arranged in parallel, the return ducts 12 are provided on both sides of the plant cultivation beds, and the blowout ducts 11 and the return ducts 12 on both sides are provided. Between the plant cultivation bed 2
The horizontal air flow curtain 13 is formed along the upper surface of the.

The conditioned air blown horizontally from the blowing duct 11 is 0.5 so as not to disturb the temperature stratification in the greenhouse.
After cooling the plant body at a wind speed of m / sec or less, it is collected in the return duct 12. Therefore, the air conditioning does not cool an unnecessary space region in the upper part of the greenhouse other than the vicinity of the cultivated plant, and saves energy.

[Embodiment 2-2] FIG. 4 is a schematic configuration diagram of a local air conditioner for a plant cultivation room according to another embodiment of the second invention. In the figure, the same reference numerals as those in FIG. 3 indicate equivalent components. The local air conditioner of the embodiment shown in FIG. 4 is provided with blow-out ducts 11 on both sides (on the wall) of the plant cultivation beds 2 arranged in parallel, and a return duct 12A is provided under the floor in the lower middle part of the plant cultivation beds 2 arranged in parallel. Blowing ducts 1 on both sides
An air curtain 13 for horizontal airflow is formed along the upper surface of the plant cultivation bed 2 between the 1 and the return duct 12.

According to the embodiment of FIG. 4, the same effect as that of the embodiment of FIG. 3 can be obtained, and the air conditioning can cool an unnecessary space area other than the vicinity of the cultivated plant, for example, in the upper part of the greenhouse. It is less and energy saving. In addition, since a plurality of ducts can be installed according to the number of rows of plant cultivation beds in the plant cultivation room, the duct can be more effectively air-conditioned.

[Embodiment 2-3] FIG. 5 is an explanatory view of a main part of a local air conditioner according to still another embodiment of the second invention. In the figure, the same reference numerals as those in FIG. 4 denote the same components. The local air conditioner of the embodiment shown in FIG. 5 is a plant cultivation bed 2A.
The surface is inclined, the blowout duct 11 is provided on the upper side of the inclined surface of the plant cultivation bed 2A, and the return duct 12A is provided below the inclined surface or under the floor, and between the blowout duct 11 and the return duct 12A. The air curtain 14 for the downward airflow is formed along the inclined surface of the plant cultivation bed 2A.

According to the embodiment of FIG. 5, the plant cultivation bed 2
Since A is inclined and the air curtain 14 is caused to flow down along the inclined surface of the plant cultivation bed 2A, the vicinity of the plant can be uniformly cooled by the cool air from the blowing duct 11. Here, the return duct may be installed at the end of the plant cultivation bed 2A or below the floor (below the floor surface passage). According to each of the embodiments of the second invention, by forming the air curtain by the cold air, it is possible to limit the cooling to only the cultivated plant or the vicinity thereof, and it is possible to save energy.

[Embodiment 3] FIG. 6 is an explanatory view of a main part of a local air conditioner according to an embodiment of the third invention. In the figure, the same reference numerals as those in FIG. 1 indicate equivalent components. The local air conditioner shown in FIG. 6 is one in which the periphery of the cultivation zone where the plant cultivation bed 2 is present is partitioned by a transparent material, for example, a vinyl curtain 10. The transparent material is not limited to the vinyl curtain, and may be a transparent material that does not impair the growth of plants and has excellent heat insulating properties. Further, it is desirable that the lower part of the plant cultivation bed 2 that does not contribute to plant cultivation be shielded from solar radiation to reduce the load.

If the cultivation zone is divided for each bed, the energy saving effect is further enhanced. Further, regarding the air conditioner 3, it goes without saying that taking a return from the height of the lower part of the plant cultivation bed 2 is effective in terms of energy saving. According to the embodiment of FIG. 6, after the conditioned air from the air conditioning duct 6A is blown onto the plant cultivation bed 2 and is partitioned by the vinyl curtain 10, the cooling air is cooled only in the vicinity of the plant due to the temperature stratification effect. Accumulates and has great energy saving effect.

Next, an embodiment of the fourth invention will be described with reference to FIGS. 7 and 8. Generally, in a plant cultivation greenhouse having a large space area having a ceiling height of 5 m or more, high temperature air stays on the ceiling surface due to temperature stratification. In a general greenhouse that does not cool, hot air is exhausted by ventilation,
Although we are trying to reduce the temperature to the outside temperature, on the other hand, in a cooling greenhouse, the air in the greenhouse is agitated and cooled by an air conditioner without using temperature stratification. Alternatively, even if the lower part of the greenhouse is cooled by utilizing temperature stratification, the high temperature zone will fall to the vicinity of the cultivation surface with solar radiation. Especially in the vicinity of the ceiling, the temperature may rise to 70 ° C. or higher in summer. A fourth invention was made to solve this phenomenon.

[Embodiment 4-1] FIG. 7 is a schematic sectional view of a plant cultivation room according to an embodiment of the fourth invention. In the figure,
9 are the same as those in the conventional technique,
The description is omitted. In FIG. 7, 1a (1a ')
Is a side window related to the outside air introducing portion, and is provided with a height difference so that the opening height H is set to a plurality of steps. Reference numeral 4 denotes a pad for performing latent heat cooling, and the pad 4 is provided between the outer wall of the greenhouse wall body 1 and a light shielding material such as the inner vinyl 1c,
Generally, it is composed of a fibrous substance that is easily wetted by water or a cellulose plate. 5 is a ceiling fan provided in the upper part of the plant cultivation room, and 6A is an air conditioning duct.

The openings for taking in and discharging the outside air, that is, the side windows 1a and the skylights 1b are net-shaped in order to prevent insects and the like from entering. Here, in the case where CO ₂ is applied in the plant cultivation room, at least the outside air intake port and the exhaust port are set higher than the plant body 2a, and at the bottom of the air curtain 15 flowing from the side window 1a to the skylight 1b, and A vinyl curtain 16 is provided on the upper part of the cultivation bed 2 to shield it from the outside air.

As described above, the local air conditioner for the plant cultivation room shown in FIG. 7 has the side window 1a (1) on the side wall forming the plant cultivation room.
a '), the ceiling fan 5, the skylight 1b, and other exhaust portions are provided in the ceiling portion, and the air curtain 15 is provided in the upper space region of the plant cultivation bed 2.
And an air conditioning duct 6A is provided below the air curtain 15. Side window 1a (1
In a '), the height difference is provided in a plurality of stages, and by selecting one of the plurality of stages, the air curtain 15 can be formed at a desired height in the upper space region of the plant cultivation bed.

According to the embodiment of FIG. 7, (1) side window 1a
Natural ventilation by (1a ') and skylight 1b, (2) Side window 1
forced ventilation using a (1a ') and the ceiling fan 5,
(3) Plant cultivation by evaporative latent heat cooling using the pad 4 and a fan, more specifically, cooling in which outside air is sucked into the greenhouse as low-temperature air by sucking the pad 4 onto which water has been dropped An air curtain 15 is formed in the upper space area of the bed 2 and heat of the cultivation room upper part high temperature air is exhausted. On the other hand, the conditioned air is heat-exchanged by the air conditioner 3 and then blown through the air conditioning duct 6A to the plant body 2a of the plant cultivation bed 2 to be locally cooled.

[Embodiment 4-2] FIG. 8 is a schematic sectional view of a plant cultivation room according to another embodiment of the fourth invention. In the figure, those having the same reference numerals as those in FIG. 7 are the same parts as those in the previous embodiment, and therefore their explanations are omitted. In FIG. 8, 17 is
It is an exhaust fan provided on the side wall of the greenhouse wall 1. The local air conditioner of the plant cultivation room shown in FIG.
Is provided, an air curtain 18 by exhaust air or latent heat air conditioning is formed in the upper part of the plant cultivation bed 2, and an air conditioning duct 6A is provided in the lower part of the air curtain 18 for local cooling.

According to each of the embodiments of the fourth invention, the air curtain is formed in the upper space region of the plant cultivation bed 2 and the local air conditioning duct 6A is provided under the air curtain, so that the air having the heat exhausting effect is obtained. Local cooling under the air curtain can be used at the same time as the curtain, and energy can be saved as compared to conventional general air conditioning.

[0038]

As described in detail above, according to the present invention, it is possible to provide a local air conditioner for a plant cultivation room that does not impair the workability in the facility and can save energy.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a local air conditioner according to an embodiment of the first invention.

FIG. 2 is an explanatory view of an apparatus in which humidifying means is provided in a moving duct according to another embodiment of the first invention.

FIG. 3 is a schematic configuration diagram of a local air conditioner for a plant cultivation room according to an embodiment of the second invention.

FIG. 4 is a schematic configuration diagram of a local air conditioner for a plant cultivation room according to another embodiment of the second invention.

FIG. 5 is an explanatory view of a main part of a local air conditioner according to still another embodiment of the second invention.

FIG. 6 is an explanatory view of a main part of a local air conditioner according to an embodiment of the third invention.

FIG. 7 is a schematic sectional view of a plant cultivation room according to an embodiment of the fourth invention.

FIG. 8 is a schematic sectional view of a plant cultivation room according to another embodiment of the fourth invention.

FIG. 9 is a schematic configuration diagram showing a conventional air conditioner for a plant cultivation room.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Greenhouse wall, 1a ... Side window, 1b ... Skylight, 1c ... Internal vinyl, 2,2A ... Plant cultivation bed, 2a ... Plant body, 3
... air conditioner, 4 ... pad, 5 ... ceiling fan, 6 ... moving duct, 6A ... air conditioning duct, 6a ... blowing hole, 6B ... flexible duct, 7 ... guide rail, 8 ... hanging tool, 9 ... water supply pipe,
9a ... Nozzle, 10 ... Vinyl curtain, 11 ... Blowing duct, 12, 12A ... Return duct, 13, 14,
15, 18 ... Air curtain, 17 ... Exhaust fan.

Claims (10)

[Claims] 1. A local air conditioner for a plant cultivation room, characterized in that an air conditioning duct is movably provided on an upper part of the plant cultivation bed in an air conditioner for the plant cultivation room. 2. The movable air conditioning duct has at least one
The plant cultivation according to claim 1, characterized in that the movable air conditioning duct is guided by a guide rail of a book, and the movable air conditioning duct is connected to a blowout part of an air conditioner by a flexible duct. Local air conditioner for the room. 3. A local air conditioner for a plant cultivation room according to claim 1, wherein a humidifying means is incorporated in a movable air conditioning duct. 4. The plant cultivation room according to claim 3, further comprising a control circuit for switching an air-conditioning single operation by a movable air-conditioning duct, a simultaneous operation of air conditioning and humidification, a humidification single operation, and a blowing operation. Local air conditioner. 5. In an air conditioner for a plant cultivation room, an air conditioning duct is provided on an upper part of the plant cultivation bed, and a return duct is provided on either a lower part or a side part of the plant cultivation bed, the air conditioning duct and the return duct. Between,
A local air conditioner for a plant cultivation room, wherein an air curtain of horizontal airflow is formed along an upper surface of the plant cultivation bed. 6. An air conditioner for a plant cultivation room, wherein the surface of the plant cultivation bed is inclined, an air conditioning duct is provided above the inclined surface of the plant cultivation bed, and a return duct is provided below the inclined surface. A local air conditioner for a plant cultivation room, characterized in that an air curtain of a downward airflow is formed along an inclined surface of the plant cultivation bed between the air conditioning duct and the return duct. 7. An air conditioner for a plant cultivation room, wherein the upper part of the bed for plant cultivation is partitioned by a transparent material and the lower part of the bed is partitioned by an opaque material with respect to the periphery of the cultivation zone where the plant cultivation bed exists, and the upper surface of the cultivation bed. A local air conditioner for a plant cultivation room, which is characterized in that an air conditioning duct is provided in the room. 8. The local air conditioner for a plant cultivation room according to claim 7, wherein a return duct is provided below the plant cultivation bed. 9. An air conditioner for a plant cultivation room, wherein an outside air introduction part is provided on a side wall forming the plant cultivation room and an exhaust part is provided on a ceiling part, and an air curtain is formed in an upper space region of the plant cultivation bed, and the air is provided. A local air conditioner for a plant cultivation room, which is provided with a local air conditioning duct under the curtain. 10. The outside air introduction portion of the side wall is provided with height differences in a plurality of steps, and by selecting one of the plurality of steps of the outside air introduction portion, a desired height of the plant cultivation bed upper space region is obtained. The local air conditioner for a plant cultivation room according to claim 8, wherein an air curtain is formed.