JP2931532B2 - Grafting seedling curing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grafted seedling curing apparatus for circulating air-conditioned air to cure grafted seedlings, and more particularly to a technique for preventing the water content of grafted seedlings from evaporating.

[0002]

2. Description of the Related Art As a grafting seedling curing apparatus, for example, FIG.
As shown in (a), there is a device that circulates air conditioned between the air-conditioning room 2 and the seedling storage room 3 through a porous plate 21 ′ of upper and lower ducts. In this apparatus, the entire vertical wall is formed as a perforated plate 21 ', and air is blown out from the perforated plate 21' to control the temperature and humidity in the apparatus. However,
In such a device, since the wind directly hits the grafted tree or the soil, there is a problem that water evaporates quickly, and irrigation is required during curing.

[0003] As another example of a conventional grafted seedling curing device, as shown in Fig. 1 (b), the outer shell of the device is double-structured and air-conditioned in a space 2 'formed therein. There is a device that indirectly controls the temperature and humidity in the seedling storage room 3 by circulating the wind. However, in this apparatus, the amount of water evaporation from the grafted seedlings and nutrient soil is reduced because the seedling accommodating room is calm, but the temperature and humidity in the room are hardly uniform. When the indoor temperature and humidity conditions change, such as when the door is opened and closed, it takes a long time to return to the target temperature and humidity.

[0004]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in the prior art and eliminates the need for grafted seedlings and soil without reducing the temperature and humidity uniformity and controllability of the environment in which the grafted seedlings are housed. It is an object to provide a grafted seedling curing device in which evaporation of water is suppressed.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a grafted seedling is cured by circulating air conditioned through a duct portion. In the grafted seedling curing device, a shelf on which the grafted seedling is placed, and the duct portion so as to blow the air-conditioned air only above the top of the grafted seedling in a direction substantially parallel to the shelf. Before
It has an air blowing part provided on a part of the wall on the side of the shelf, so that the conditioned air does not directly hit the grafted seedling.
Characterized in that the cormorants configuration, the invention of claim 2 is the grafted seedling curing apparatus by circulating conditioned air to cure the grafted seedlings, and the shelf for placing the grafted seedlings, substantially parallel to the shelf An air blowing unit that blows air entirely toward the shelf in the direction, and a blocking member that blocks air that falls in a height range of the grafted seedling ,
According to a third aspect of the present invention, in addition to the features of the first or second aspect of the present invention, a lower blow-out portion for blowing out a larger amount of air than the amount of air blown out from the air blow-out portion is provided below the shelf. I do.

[0006]

According to the invention of claim 1, such that the blown and the shelf for placing the graft seedlings, a conditioned air only above approximately the top of a by grafting seedlings above the shelf in a direction substantially parallel to the shelf
An air outlet is provided on a part of the duct side of the shelf so that the air-conditioned air does not directly hit the grafted seedlings.
Configuration to have Runode, placing the grafted seedlings on the shelf, when the blown air from the air blowout portion, the amount of air directly striking the grafted seedlings and iodine is reduced. That is, since the blown air is circulated, most of the air flows from the blow side to the opposite side in parallel with the shelf. A part of the blown air is directed toward the grafted seedling and the soil, and the airflow is also generated in the grafted seedling and the soil. However, this flow has a lower velocity than the upper main flow. As a result, in the grafted seedlings and the soil nourishment, evaporation of water is suppressed, and since there is an air flow, the temperature and humidity become uniform and the controllability is improved.

According to the second aspect of the present invention, an air blower that blows air toward the shelf in a direction substantially parallel to the shelf on which the grafted seedling is placed, and shuts off air that falls within the height range of the grafted seedling. Since the blocking member is provided, the air headed for the grafted plant among the air blown out entirely is blocked by the blocking member, changes direction and goes upward, and merges with the air blown out in this direction from the beginning. Becomes the mainstream and passes above the grafted seedlings. As a result, the amount of air directed to the grafted seedling and its nourishment portion is reduced, and evaporation of water therefrom is prevented.

According to the third aspect of the present invention, since the lower blow-out portion for blowing out a larger amount of air than the air blow-out portion is provided below the shelf, even if the amount of air blown out from the air blow-out portion is reduced. Since the amount of air blown out from the lower blowout portion is large, the amount of circulating air required for controlling the temperature and humidity can be secured. And if the amount of air blown out from the air blowing part is reduced in this way, the amount of air flowing in the upper part of the grafted seedling decreases, so the amount of the air flowing in the direction of the grafted seedling also decreases, and the evaporation of the moisture of the grafted seedling is reduced. Even less.

[0009]

FIG. 1 shows the construction of a seedling mounting shelf portion of a grafted seedling curing apparatus according to an embodiment, and FIG. 2 shows the structure of the entire apparatus. The grafting seedling curing device includes a heat insulating panel 1 forming a main body, an air-conditioning room and a duct portion 2 which are a peripheral part partitioned inside thereof, a seedling storage room 3 inside thereof, and a grafted seedling 4 placed in a cell tray 5. The cart 7 including the casters 8 to which the shelves 6 to be mounted are attached , the wall of the duct portion 2 on the side of the shelves 6
That the perforated plate 21 of the air outlet portion attached to a portion of the vertical wall 20, an opening 22 of the lower balloon portion,
Fan 9 for circulating conditioned air, fluorescent light 1
0 or the like. The cooling coil 24, the heater 25, the humidifier 2
6, a temperature sensor 27, a humidity sensor 28 and the like are provided. Further, a door 11 and a control panel 12 are provided in front of the seedling storage room 3, and a refrigerator unit 13 is provided on the ceiling. And do not let the conditioned air hit the grafted seedlings directly.
It is configured so that

The perforated plate 21 is located on the top 4 of the grafted seedling 4 above the shelf 6 in the direction of arrow A, which is a direction substantially parallel to the shelf 6.
The air-conditioned air is blown out above a. That is, the perforated plate 2
Since a large number of small holes having a large opening resistance are formed in the vertical duct 2a, the air in the vertical duct 2a having a large cross-sectional area and a low flow velocity blows out from the perforated plate 21 in a substantially horizontal direction. The air blowing section may be a guide plate or the like as long as the apparatus blows air in a substantially horizontal direction.

The openings 22 are of an appropriate size such that a larger amount of air is blown than the amount of air blown from each perforated plate 21 provided corresponding to the multi-stage shelves.
When the shelf 6 has a plurality of stages, the opening 22 is provided below the lowermost shelf, so that even if the flow velocity is increased or the flow rate is increased, the wind hardly affects the grafted seedling. Therefore,
This portion is simply an opening without interposing a resistor such as a perforated plate. The flow rate in this portion is determined so that an air volume necessary for controlling the temperature and humidity of the circulating air is obtained.

FIG. 3 shows the results of experiments performed by the inventors.
In an experiment, in a device as shown in FIG.
Is a perforated plate, which is sequentially closed from the bottom to the top of the shelf 6 to make the experimental conditions of fully open, 1/3 closed, 1/2 closed and fully closed. The transpiration was measured. The wind speed near the soil and near the seedlings was also measured. In this case, an eggplant-grafted seedling was used as the grafted seedling, and the sample seedling was the one at the center of the shelf, on the side of the wind blowing side.

The measurement results of the wind speed are as follows. Wind speed near the soil (m / s) Wind speed near the seedling (m / s) Fully open 0.23 0.08 1/3 closed 0.05 0.20 1/2 closed 0.03 0.03 Fully closed 0 0 .01

As shown in FIG. 3 and the above table, when the perforated plate of the vertical wall is closed by half and the wind is blown out above the seedlings, the wind speed near the soil and the seedlings is reduced to about 0.03 m / s. It was found that water transpiration was greatly suppressed. As a result, as shown by the horizontal line in FIG. 3, assuming that the limit amount of water evaporation requiring irrigation is 27 g per four seedlings, 1
In the case of / 2 closure or full closure, curing could be completed without watering for 72 hours (3 days).

Therefore, as in the present embodiment shown in FIG. 1, air is blown from the perforated plate 21 provided above in a substantially horizontal direction.
It is desirable to blow air so that the wind speed near the soil and near the seedlings is 0.1 m / s or less. On the other hand, at the opening 22, the flow rate of the blown air is increased to secure a necessary amount of circulating air.

The above-described apparatus operates as follows. A truck having grafted seedlings mounted on all shelves is carried into the accommodation room 3, and the refrigerator unit 13, the cooling coil 24,
By operating the heater 25, the humidifier 26, the fan 10, and the like, the conditioned air is supplied to the perforated plate 21 and the opening 22 of the vertical duct 2a.
Let out from. The position and aperture ratio of the perforated plate 21 are designed and the amount of air is adjusted so that the flow rate of the air is, for example, 0.1 m / s in the grafted seedlings and the soil.
When the air is blown out in this manner, the air circulates as shown by arrows in FIG.
In FIG. 2, the temperature and humidity of the circulating air are detected, and various devices are automatically controlled by the control panel 12 so that the temperature and humidity in the seedling storage chamber 3 are controlled to the target temperature and humidity. According to such an operation, the water content of the grafted seedlings is small, and it takes three to three months until the curing is completed.
Eliminates the need for irrigation once a day. Further, the temperature and humidity in the room are maintained uniformly and well.

FIG. 4 shows another embodiment. The device of this example is
Compared to the apparatus shown in FIG. 1, the vertical duct 2a is entirely made of a perforated plate 21 'as an air blowing section for blowing air toward the shelf in a direction substantially parallel to the shelf. A windshield 6a, which is a blocking member having substantially the same height as that of the windshield 6a, is provided on the shelf 6, and these are used to form an air blowing portion. In this case, since the wind does not directly hit the seedlings and the nourished portion, evaporation of water from these is prevented. In addition, as shown by a two-dot chain line in the figure, a windshield 6a may be added to the downstream side in the wind flow direction.

In the above, an example of an apparatus for providing shelves on a cart has been described. However, it is needless to say that the present invention can be applied even when the shelves are fixed. The number of shelves can be freely selected.
In the present embodiment, the air circulation system blows air from both sides of the chamber and sucks air from the center. However, a device that blows air from the center and sucks air from both sides may be used. Further, the main body formed by the heat insulating panel 1 or the like forming the air conditioning room or the test room may be of a portable type or an assembled type, or may be a fixed facility.

[0019]

As described above, according to the present invention, according to the first aspect of the present invention, the circulating air is blown substantially parallel to the shelves and above the grafted seedlings, so that the temperature and humidity can be adjusted and the grafted seedlings can be adjusted. Evaporation of water can be suppressed. In the invention of claim 2, by providing a shielding member at the grafted seedling portion with respect to the blowing portion that blows out the entire surface,
The air flowing through the grafted seedlings and the nutrient portion can be greatly reduced, and evaporation of water from these can be prevented. In the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, by blowing a large amount of air from below the shelf,
The amount of air blown out from above the grafted seedling can be further reduced, and the evaporation of the moisture of the grafted seedling can be further reduced.

[Brief description of the drawings]

FIG. 1A is an explanatory view showing a configuration of a seedling placing portion of a grafted seedling curing device of an embodiment, and FIG. 1B is an explanatory view showing a shape of a cell tray.

2A and 2B show the structure of the grafted seedling curing device, wherein FIG. 2A is a cross-sectional view and FIG. 2B is a view taken along the line bb of FIG.

FIG. 3 is a curve diagram showing an experimental result of a water evaporation amount of a grafted seedling.

FIG. 4 is an explanatory view showing a configuration of a seedling mounting portion of a grafted seedling curing device according to another embodiment.

FIGS. 5A and 5B are explanatory views of a conventional grafted seedling curing device.

[Explanation of symbols]

6 shelves 6 a windshield (blocking member, balloon portion) 21 porous plate (blowout portion) 21 'entire perforated plate (the entire surface blowout unit, balloon portion) 22 opening (under air blowout portion)

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masayuki Fujii 1-32 Chayamachi, Kita-ku, Osaka, Osaka Prefecture Inside Yanmar Agricultural Machinery Co., Ltd. (72) Inventor Akira Tsuta 1st Chayamacho, Kita-ku, Osaka, Osaka No. 32 Yanmar Agricultural Machinery Co., Ltd. (56) References JP-A-5-71762 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01G 9/24 A01G 1/06 A01G 9 /14

Claims (3)

(57) [Claims] 1. A grafting seedling curing apparatus for curing grafted seedlings by circulating air conditioned through a duct portion , wherein the grafting seedlings are placed on the shelf, and the grafted seedlings are placed in a direction substantially parallel to the shelf. Part of the wall on the shelf side of the duct portion so as to blow out the conditioned air only above the top of
Having an air blowing section provided in the
A grafting seedling curing device characterized in that air is not directly applied to the grafting seedling. 2. A grafting seedling curing device for circulating air-conditioned air to cure grafted seedlings, comprising: a shelf on which the grafted seedlings are placed; and a whole surface facing the shelf in a direction substantially parallel to the shelf. grafted seedlings curing apparatus characterized by comprising an air blowout portion for blowing air, and a blocking member for blocking the air striking the height range of the grafted seedlings. 3. The grafted seedling curing apparatus according to claim 1, wherein a lower blowing section for blowing out a larger amount of air than the amount of air blown from the air blowing section is provided below the shelf.