JPH11235130A - Device for culturing plant - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plant culture device capable of culturing plants in winter even in a cold district without using a fossil fuel causing air pollution and global warming. SOLUTION: This device for culturing plants is provided with solar water heaters 1, 1' in which many pipes for passing water drawn up from the underground are disposed at a place exposed to solar light, heat storage tanks 2, 2' for storing hot water heated with the solar water heaters 1, 1', and pipes P for supplying the hot water stored in the heat storage tanks 2, 2' to heating pipes 3, 3' in a green house in which desired plants are planted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plant cultivation apparatus suitable for forcing cultivation and suppression cultivation in a greenhouse, and more particularly to a plant cultivation apparatus for cultivating plants using natural energy such as solar heat and wind. It is.

[0002]

2. Description of the Related Art In forcing cultivation of strawberries, for example, a sheet such as mulching is put on a soil in a greenhouse or a greenhouse, and seedlings are planted there. Some are known to be warm and to be able to bear fruit even in winter.

[0003]

However, especially when cultivating melon or the like in winter in a cold region, the outside temperature is particularly low, so that heating using fossil fuels such as heavy oil or light oil is required. It is necessary and contributes to global warming and causes air pollution.

[0004] In addition, in the case of winter, the water to be sprayed may fluctuate greatly in accordance with the ambient temperature. Especially in cold regions, even well water has a low water temperature. Not preferred for growing plants.

[0005] In view of the above circumstances, the present invention provides a plant cultivation apparatus capable of growing plants in winter even in cold regions without using fossil fuels that cause air pollution and global warming. The purpose is to do so.

[0006]

That is, the invention according to the first aspect of the present invention provides a solar water heater in which a large number of pipes for feeding groundwater to be pumped are provided at a place where sunlight shines, and the solar water heater is used for heating. With a heat storage tank for storing hot water stored therein, and a pump for supplying to a heating pipe in a room and / or in a soil in a greenhouse in which a plant to grow the hot water stored in the heat storage tank is planted. is there.

[0007] The invention according to claim 2 is characterized in that the pumped ground water is heated by the heat generated by the fermentation and generation of bacteria by depositing dead leaves of plants and feces of animals in a container. It is.

[0008]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows a plant cultivation apparatus according to a first embodiment of the present invention. The plant cultivation apparatus includes a pump P for pumping groundwater.
A solar water heater 1 for heating the pumped ground water with solar heat, an underground heat storage tank 2 for storing the heated ground water, a heating (heating) pipe 3 and a water channel 3 ′ provided in the greenhouse H. An electromagnetic valve B1 attached to the underground heat storage tank 2, a filter F provided at the end of the water channel 3 ', and a filter F
And a pump P 'for pumping groundwater after passing through the heating pipe 3 (to the solar water heater 1' and the underground heat storage tank 2 'described below), and a solenoid valve B2 provided downstream of the pump P'.
And a solar water heater 1 'and an underground heat storage tank 2' connected via a pipe after passing through the solenoid valve B2.

The solar water heater 1 has a large number of pipes disposed therein, and the underground water pumped by the pump P is stored in the pipes until at least a predetermined water temperature is reached. The water heater 1 is provided with a sensor S for detecting the water temperature (see FIG. 2). When the water temperature becomes constant, the water temperature is detected and the solenoid valve Bo provided on the discharge port side is automatically turned on. It is controlled by the control unit 4 shown in FIG. The solar water heater 1 'has the same configuration.

The underground heat storage tank 2 uses the principle of a thermos to keep warm water sent into a container formed of a heat insulating material at a constant temperature (To) for a long time, and stores the warm water.
In this embodiment, it is buried underground to increase the heat retention efficiency. The drain of the underground heat storage tank 2 has a solenoid valve B
1 is provided so that heated groundwater in the heat storage tank 2 is supplied to the heating pipe 3 and the water channel 3 'at regular time intervals.

The waterway 3 'is used for hydroponic cultivation, that is, it supplies nutrients together with moisture from the groundwater flowing through the waterway 3' to the growing plant (in addition to the groundwater flowing therethrough). Also adjusts the pH of the water). In this embodiment, for example, a sponge or moss is provided in a part of the waterway 3 'so as not to be washed away, and the roots of vegetables, fruits or flowers to be grown are planted there. I have. Further, in this embodiment, a filter F is provided at the end of the end of the water channel 3 'in order to reuse groundwater that has not been absorbed by the plants, so that impurities mixed therein are removed here. On the other hand, the heating pipe 3 flows groundwater heated at regular time intervals into the greenhouse H in order to keep the room temperature of the greenhouse H substantially constant. In this embodiment, the starting and ending sides are water channels. Although the pipe is partially shared with the pipe 3 ', the pipe may be installed independently or separately from the waterway 3' so that water is supplied at appropriate time intervals when the room temperature decreases.

The solenoid valve B2 detects the temperature of the groundwater passing through the heating pipe 3 and the water channel 3 'by a sensor S' (see FIG. 2).
When the water temperature at this time is lower than the reference value To, the water is sent to the solar water heater 1 'and
When it is below the reference value To, it is sent to the underground heat storage tank 2. The solenoid valve B2 of this embodiment is
As shown in FIG. 2, the flow is appropriately switched under the control of the control unit 4.

The underground heat storage tank 2 'has the same structure as the underground heat storage tank 2 and stores groundwater heated by the solar water heater 1', and is heated again by opening the solenoid valve B1. The heated groundwater is sent out to the service pipe 3 and the water channel 3 '.

Therefore, according to this embodiment, groundwater is used and heated in sunlight to store a large amount in the underground heat storage tank 2. In other words, the conventional fossil fuel is used. It avoids use and supplies heated underground water using the natural energy from the sun as water for heating and hydroponic cultivation in greenhouses. Various plants such as fruits, vegetables and flowers can be successfully grown without using it as a heating fuel.

In this embodiment, electric power from a commercial power supply is used to operate the pumps P and P 'and the solenoid valves Bo, B1, and B2. However, for example, a solar cell, a windmill, or the like is provided.
It is more preferable to use these to generate electric power and use the electric power to illuminate the electric equipment and the inside of the greenhouse, and further to perform heating.

In this embodiment, hydroponics is performed. However, in addition to adjusting the room temperature in the greenhouse, for example, ordinary soil is used in the greenhouse and the space between the ridges and ridges is used. A groundwater temperature may be set and adjusted to a desired temperature by disposing a hot water pipe. In this case, the temperature of the water to be sprinkled may be appropriately heated. Further, a supply unit for adding and supplying nutrients to the plants to be grown and other appropriate culture solutions to water in the water channel or water for watering the soil may be provided.

Next, a second embodiment of the present invention will be described. In this embodiment, the same components as those in the previous embodiment are denoted by the same reference numerals, and redundant description will be avoided. In the plant cultivation apparatus shown in FIG. 3, in addition to those of the first embodiment, a heat generating container 5 containing and accumulating organic unnecessary substances such as fallen leaves and chicken dung, a heat absorbing tube 6 surrounded by the heat generating container 5, and a solenoid valve B3.

In the heat-generating container 5, an exothermic reaction is simultaneously generated when organic unnecessary substances such as fallen leaves and chicken dung are decomposed by microorganisms such as bacteria in the container. The heat is conducted to the groundwater 6, and the groundwater passing through the inside is heated. In addition,
In this embodiment, the heat absorbing tube 6 is provided on the outer peripheral surface of the heat generating container 5. However, the heat absorbing tube 6 may be installed inside the heat generating container 6 or buried in the wall of the heat absorbing tube 6.

The solenoid valve B3 is provided with a sensor for measuring the outside air temperature in the vicinity of the pump P. When it detects that the temperature is lower than a predetermined temperature, the control unit (not shown) controls the downstream of the pump P. The flow path on the side communicates with the heat absorbing tube 6 side, and is configured not to pass through the solar water heater 1. On the other hand, when the outside air temperature exceeds a predetermined value, the pumped ground water flows to both the solar water heater 1 and the heat absorbing tube 5 (only the solar water heater 1 side may be used).

Therefore, when the outside air temperature is equal to or lower than the predetermined value,
The groundwater is heated by the flow path through the heat absorbing tube 6 and the heated groundwater is sent to the underground heat storage tank 2 so that hot water can be supplied even during snowfall in winter.

[0021]

As described above, according to the present invention, there are provided a solar water heater in which a number of pipes for feeding groundwater to be pumped are provided in a place where sunlight shines, and hot water heated by the solar water heater is stored. And a pump for supplying the heating water stored in the heat storage tank to a heating pipe in a room and / or in a soil in a greenhouse in which a plant to be cultivated is planted. Plants can be grown in cold regions without using fossil fuels, which is also effective in preventing global warming and air pollution.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a plant cultivation apparatus according to a first embodiment of the present invention.

FIG. 2 is a configuration block diagram showing an electrical connection of the present invention.

FIG. 3 is a schematic configuration diagram showing a plant cultivation apparatus according to a second embodiment of the present invention.

[Explanation of symbols]

 1, 1 'Solar water heater 2, 2' Heat storage tank 3 Heating (heating) pipe 3 'Water channel 4 Control unit 5 Heating vessel 6 Heat absorbing tube Bo, B1, B2, B3 Solenoid valve P, P' Pump

Claims (2)

[Claims] 1. A solar water heater in which a large number of pipes for feeding groundwater to be pumped are placed in a place where sunlight shines, a heat storage tank for storing hot water heated by the solar water heater, and a heat storage tank for storing the hot water. A plant cultivation apparatus comprising: a pump for supplying a heating pipe in a room and / or a soil in a greenhouse in which a plant whose hot water is to be grown is planted. 2. The pump according to claim 1, wherein the pumped-up groundwater is heated by heat generated by fermentation and generation of bacteria by depositing dead leaves of plants, feces of animals, and the like in a container. Plant cultivation equipment.