JPH08275686A - Equipment for water culture - Google Patents

Abstract

PURPOSE: To obtain circulation type solution culture equipment which can create the environment suitable for plant growth where the gas and energy are sufficiently exchanged between the rhizosphere and the upper plant body sphere by installing an air blower in a proper place in the box or by keeping the upper plant body sphere thermally insulated. CONSTITUTION: For example, this solution culture equipment comprises the walls for the green house 1, a box 2 for the solution-sprinkling type water culture equipment, the upper face panel 3 for the culture equipment, the plants 4 to be cultured, the fertilizer solution tank 5, the pump 6, the piping 7, sprinklers 8, the air blower 9 and the openings 10 and brings about a large energy-saving effect.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydroponic device, and more particularly,
The present invention relates to a hydroponic device suitable for gas exchange and energy exchange between the above-ground part and the rhizosphere.

[0002]

2. Description of the Related Art Conventional hydroponic devices have advantages and disadvantages,
In particular, the fountain type hydroponic device (Japanese Patent Application No. 6-9096) is excellent in terms of rhizosphere freedom, rhizosphere gas exchange and rhizosphere temperature controllability.

[0003]

However, this method is not perfect and there are still problems. In other words, since the device box has a closed structure to improve the heat insulation, when the activity of the roots that were overgrown became active, oxygen deficiency and carbon dioxide excess occurred. Moreover, since the rhizosphere and the upper body are also cut off in terms of energy, it is necessary to air-condition each area independently, and sometimes the entire equipment consumes extra energy. Therefore, an object of the present invention is to provide a technique for easily and energy saving gas exchange and energy exchange between the rhizosphere and the upper body in a hydroponic device.

[0004]

Means for Solving the Problems In order to achieve the above object, the present invention is to install an air blower at an appropriate location of a cultivation box top panel, and to install an opening at another appropriate location. Further, a film or the like is spread above the upper panel to form a heat retaining space for the upper part of the plant.

[0005]

When the blower is operated, the air circulates between the inside and the outside of the box, and when the film is stretched to form the heat retaining space, the air circulation region outside the box is minimized. .

[0006]

Embodiments will be described below in detail with reference to the embodiment shown in FIG. In the figure, 1 is a greenhouse wall, 2 is a box of a fountain-type hydroponic cultivation apparatus, 3
Is a top panel of a cultivating device, 4 is a plant under cultivation, 5 is a liquid fertilizer tank, 6 is a pump, 7 is piping, 8 is a fountain flow, 9 is a blower, 10 is an opening, and arrows are air flows, respectively. . With this configuration, during daytime photosynthesis, the pump 6 operates to pump the liquid fertilizer to the pipe 7, and as a result, the plant 4 is sprayed to the rhizosphere as a fountain flow 8 from the narrow mouth provided in the pipe. In the rhizosphere, liquid fertilizer and oxygen gas are absorbed, and waste products and carbon dioxide gas are released. At this time, if plants are active and the box is closed, the rhizosphere may fall into excess carbon dioxide and lack of oxygen gas. When the room is hot and dry with respect to the rhizosphere during the daytime in winter, etc., the stomata of the plant leaf may be closed and the photosynthetic activity may be reduced. Therefore, when the blower 9 is operated to open the opening 10, an air flow is generated in the room-rhizosphere-room and circulates. This operation results in sufficient gas exchange, that is,
Oxygen gas permeates the rhizosphere and carbon dioxide increases in the room, which produces an effect of providing a good gas environment for both the rhizosphere and the upper body. In addition, since moisture is released from the inside of the box to the above-ground portion, the humidity in the room is increased to promote the opening of the stomata, thus activating photosynthesis.
Further, since the high temperature energy in the room is returned to the rhizosphere during the daytime in winter, the temperature rise of the rhizosphere can be rapidly increased in conjunction with the upper body. The energy saving effect of saving the energy for heating the liquid fertilizer is produced. Further, when it is desired to heat and cool the rhizosphere and the room at the same time, such as at night, when the blower is operated, the heating and cooling energy inside the box returns to the room, so that the room temperature is adjusted.

A detailed description will be given based on the embodiment shown in FIG. 2 in the figure
Is a cultivation box, 11 is a pillar, and 12 is a film or sheet. By stretching the film along the pillars in a mini-house shape, it is possible to create a heat-retaining and light-shielding space for the upper body of the plant. At this time, by operating the blower, the heating / cooling energy in the box can be returned only to the inside of the mini-house, and as a result, the heating / cooling energy can be significantly saved as compared with the case without the mini-house. . Heat and cool only the upper part of the plant, not the entire room. That is, since local air conditioning can be performed, a large-scale facility has a large energy saving effect. The pillar 11 may have a rectangular shape as well as an arc shape. In this case,
By moving the column up and down, the height can be adjusted or the column can be lowered to the stored state.

For exchanging energy and gas between the rhizosphere and the upper body, that is, between the inside of the box and the outside of the box, not only a blower is used but also a part of the box can be opened and closed. Is also good. The present invention is applicable not only to the fountain-type hydroponic device but also to any type of circulation-type hydroponic device.

[0009]

EFFECTS OF THE INVENTION In the present invention, in the circulation type hydroponic device, since the air can be circulated between the rhizosphere and the upper body, gas exchange, humidity exchange and temperature exchange can be performed between them. Next, it produces an environment-creating effect suitable for plant growth. In addition, since the upper body is covered with a mini-house, a large energy saving effect is synergized with this effect.

[Brief description of drawings]

FIG. 1 is a sectional view of a hydroponic device according to the present invention.

FIG. 2 is a perspective view of a hydroponic device according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Greenhouse wall, 2 ... Cultivator box side wall, 3 ... Cultivator top panel, 4 ... Cultivation plant, 5 ... Tank, 6 ... Pump, 7
... Piping, 8 ... Fountain flow, 9 ... Blower, 10 ... Opening, 11
… Posts, 12… film.

Claims (1)

[Claims] 1. A hydroponic device for a circulation type hydroponic device, wherein a blower device is installed at an appropriate position of the box body or the upper part of the plant is heat-insulated.