JPH0145336B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an environment control device for plants for freely controlling the environment when growing plants.

[Background of the invention]

This type of device is used for the purpose of promoting or inhibiting the growth of specific plants under desired environmental conditions.
Or used for the purpose of conducting various tests on plant cultivation. Examples of environmental items to be controlled include:
These include temperature, humidity, illuminance, carbon dioxide concentration, and soil conditions. Among these items, it is most preferable to utilize natural light as much as possible for illuminance in terms of plant growth.
Regarding temperature and humidity, it is preferable to forcefully circulate the desired conditioned air inside the plant growth chamber. The circulating flow of the harmonized airflow reproduces the ventilation conditions found in nature and maintains a uniform indoor environment.

Therefore, even in conventional devices of this kind, the outer circumferential surface of the plant growth chamber is made of a transparent member so as to allow natural light to enter, and an air conditioning means for forced circulation of conditioned air into the growth chamber is provided. Equipped with

However, in such conventional devices, problems such as uneven indoor temperature and humidity and problems with the ventilation environment have occurred due to problems in the arrangement of the conditioned air outlets and suction ports in the air conditioning means. Furthermore, the presence of the air conditioning means poses an obstacle to bringing in natural light, making it difficult to achieve both natural lighting and air conditioning under favorable conditions.

[Purpose of the invention]

The purpose of the present invention is to improve the above-mentioned problems of the prior art, to maintain the ventilation of conditioned air in a uniform and favorable direction, to equalize the indoor temperature and humidity, and to provide a plant that does not have any inconvenience in letting in natural light. The purpose of the present invention is to provide an environmental control device for use in the environment.

[Structure of the invention]

In order to achieve the above object, the plant environment control device according to the present invention includes a plant growth chamber whose outer periphery is made of a transparent member and which allows natural light from outside to enter the room; An air conditioning means for circulating conditioned air in the plant growth chamber is provided, an outlet for blowing out the conditioned air upward is provided near the floor surface of the plant growth chamber, and the floor surface of the plant growth chamber is provided with air conditioning means for circulating conditioned air. It is characterized by forming a suction surface of.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

The figure is a schematic longitudinal cross-sectional view of the environmental control device for plants according to the present invention. In the figure, a plant growth chamber 10 has a rectangular floor surface 12, a side wall 14 whose upper half is made of a transparent member, and a gable-shaped roof 16 made of a transparent member. The plant 28 to be grown can be accommodated indoors.

On both sides of the ridge of the room 10, conditioned air outlets 18 are arranged in parallel and facing positions. This outlet 1
8 is preferably provided continuously in a direction perpendicular to the plane of the paper, and blows conditioned air upward to form an air curtain. The floor surface 12 is constituted by a perforated plate and forms a suction surface for conditioned air.

The basement part of this plant growth room 10, that is, the lower part of the floor surface 12 is a conditioned air duct area 20.
The conditioned air is blown out from the main duct 22, through the connecting duct 24, and from the outlet 18. Further, the air sucked from the floor surface 12 is introduced into an air conditioner (not shown), where the temperature, humidity, and carbon dioxide concentration are adjusted.
The air is circulated and supplied as conditioned air.

In the above configuration, the conditioned air blown upward from the air outlet 18 rises along the slope of the ridge side wall 14 and the roof 16 of the room 10, and in the process of rising, some of the air branches and descends. form a flow. An adjustment plate 26 is provided at a predetermined position on the roof 16 so that the conditioned air can be adjusted to flow downward. This adjusting plate 26 is made of a transparent member. Furthermore, since the floor surface 12 is formed with a suction surface, the conditioned air guided downward by the adjusting plate 26 can be reliably guided to the floor surface. Therefore, by attaching the adjusting plates 26, 26, . . . to desired positions, the adjusted air from the outlet 18 forms a uniform downward airflow distribution 30 with respect to the cross section of the chamber. For this reason, 28 plants housed indoors
Provide uniform ventilation conditions to maintain uniform temperature and humidity.

In the figure, one pair of adjustment plates 26 are provided on the sloped surface of the roof, but if necessary, a plurality of pairs of adjustment plates 26 may be provided by changing the shape and dimensions. Further, since the distribution 30 of the downdraft changes slightly depending on the amount of circulation of the conditioned air, in other words, the rising speed of the conditioned air blown out from the outlet 18, the adjustment plate 2
6, it is preferable that the set angle can be adjusted manually or automatically.

The plant environment control device of this embodiment described above has the following effects.

First, since the conditioned air outlet and inlet are located at the lower part of the room, their presence
It does not become an obstacle to the introduction of natural light into the plant growth room. Therefore, it is possible to achieve both natural lighting and air conditioning under favorable conditions.

Second, the conditioned air is blown out from both sides of the ridge of the room to form an air curtain, makes a U-turn at the top of the room, and is sucked into the entire surface through the holes in the floor, resulting in a uniform downdraft distribution of the conditioned air. Easy to get. Therefore, uniform temperature and humidity can be maintained for the plants to be grown. This effect is further reinforced by providing the adjustment plate 26.

Thirdly, the direction of ventilation of the conditioned air toward the plants becomes a downward draft, making it possible to almost reproduce natural ventilation conditions. For this reason, the root drying phenomenon is less likely to occur compared to ventilation using upward air currents, which has been attempted with conventional devices.

In the above embodiments, the plant growth chamber has a rectangular cross section and a gable roof, but the present invention is not limited thereto, and the cross section may be circular or hexagonal, for example. Alternatively, the roof may have a single roof structure, and the air outlet may be provided only on one side of the room.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to uniformly and favorably provide ventilation conditions for forcedly circulated conditioned air to plants in a plant growing room, and maintain uniform temperature and humidity. Also, natural light
Plants can be harvested from the entire outer circumferential surface of the plant growth chamber without any hindrance. Therefore, the plant environment control device according to the present invention is particularly effective in applications such as comparative testing of plant growth conditions under strict conditions.

[Brief explanation of drawings]

The figure is a schematic longitudinal cross-sectional view of the environmental control device for plants according to the present invention. 10... Plant growth room, 12... Floor surface, 14...
Side wall, 16... Roof, 18... Air outlet, 20...
Duct area, 22... Main duct, 24... Connection duct, 26... Adjustment plate, 28... Plant.

Claims (1)

[Scope of Claims] 1. A plant growing room whose outer peripheral surface is made of a transparent member and which allows natural light from outside to enter the room, and an air conditioning means for circulating conditioned air within the plant growing room. In the plant environment control device, the ceiling in the plant growth chamber is inclined, and an air outlet for blowing out conditioned air upward is provided in the plant growth chamber so that the conditioned air rises from a low position to a high position of the ceiling. An adjusting plate is installed on the ceiling to guide a part of the conditioned air rising along the slope of the ceiling toward the floor surface, and substantially the entire floor surface is used to draw in the conditioned air. An environmental control device for plants characterized by a surface. 2. Claim 1, characterized in that the floor surface of the plant growth chamber is rectangular, and the air outlets are arranged in parallel positions on both sides of the floor surface, facing each other.
The environmental control device for plants described in Section 1. 3. The plant environment control device according to claim 2, wherein the roof of the plant growth chamber is gable-shaped, and the air outlet is arranged on the ridge side of the plant growth chamber.