JPS6449Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a heating device for a culture solution in hydroponic cultivation.

It is generally known that the growth of crops grown in greenhouses or the like is largely influenced by the soil temperature of the rhizosphere. In particular, in hydroponic cultivation, since the medium is an aqueous solution, the heat retention capacity of the rhizosphere is even lower than that of soil.

Therefore, by placing a heater in a part of the circulation path of the culture solution and heating the solution with a boiler or electric heater, or by installing a solar heat collector, the heated culture solution is transferred to the cultivation bed. supply is being carried out.

However, this conventional device requires a large cost for equipment such as boilers and heat collectors, as well as fuel energy, and requires a location other than the cultivation bed to install these devices.

In particular, for those that collect and use solar heat,
In order to obtain the amount of heat needed to heat a large amount of culture solution, it was necessary to install a large-area heat collecting plate, which posed a problem in terms of effective use of the cultivated land.

The present invention was proposed in order to eliminate the above-mentioned drawbacks, and its purpose was to provide a system to heat the culture solution supplied to the cultivation bed in a part of the culture solution circulation path. In the device, a partition member is fixedly provided above the liquid level of the culture medium tank and has holes at appropriate intervals through which cultivated plants can be inserted, and the partition member is connected to the circulation path at the import and output ports at the ends. , a flexible bag-shaped heat receiving part placed on the upper surface of the partition member, and a hydroponic culture provided so that cultivated plants can be held between the heat receiving parts or between the heat receiving part and the wall surface of the bed frame. This is accomplished by a liquid heating device.

Next, the present invention will be explained in more detail according to the embodiments shown in the drawings.

1 is a cultivation bed for hydroponic cultivation, and 2 is a partition member, which is fixed inside the bed frames 1a, 1a so as to divide the cultivation bed 1 into upper and lower parts.
3 is a culture medium tank; 4 is a discharge pipe connecting the culture medium tank 3 and tank 5; Reference numeral 6 denotes a water pump, and a water pump 61 and a valve 62 are provided at key points thereof. 7
is a heat receiving part placed on the partition plate 2, which is formed into a flexible bag-like body made of plastic film, and has an inlet 71 at one end and an outport 72 at the other end. ing.

The inlet 71 is connected to the discharge part of the water pumping pipe 6, and the outport 72 is connected to an appropriate position of the culture medium tank 3 so as to face each other in an open state or in a continuous and fixed state.

The circulation paths of the culture solution are indicated by the above symbols 3, 4, 5, 6,
It is formed by components 61, 62, 71, and 72. Of these elements, tank 5,
The valve 52 may not be provided.

In addition, the surface of the heat receiving part 7 may be made black or the like to improve the heat absorption efficiency, and the heat receiving part 7 may be made of a large number of small diameter pipes 7a.
It is also an embodiment included in the present invention to form an aggregate of ~7d to improve heat receiving efficiency. Furthermore, it is also a modification included in the present invention that the partition member 2 is made of a mesh or other support structure suitable for supporting the heat receiving section 7.

The culture solution flowing in from the import 71 stays in the heat receiving part 7 for a predetermined time or is heated by solar heat while flowing through without staying, and is discharged from the out port 72 and supplied to the culture medium tank 3. It is something that will be done. Therefore, it is possible to sufficiently heat the culture solution necessary to promote crop growth without using forced heating equipment such as a boiler or installing large-area heat collecting plates elsewhere. can. In addition, as shown in FIG. 2, two or more heat receiving parts 7, 7... can be connected in parallel via an import 71,
Alternatively, connecting in series as shown in FIG. 4 is an embodiment that can be selected as appropriate depending on the size or number of beds 1.

As shown in FIG. 3, the heat-receiving parts 7' and 7'' made of flexible plastic film are arranged in a meandering manner so that the bag walls are in contact with each other, or in contact with the bed frame 1a. It is something to be placed.

As a result, the crops P1 and P2 can be placed between the heat receiving parts 7' and 7" or between the heat receiving parts 7" and the heat receiving part 7" while directly inserted into the through holes 21 and 21 of the partition member without using a separate fixing member. It can be flexibly held between the bed frame 1a and its posture can be maintained.

According to the present invention having the above configuration, the space on the top of the culture medium can be effectively used to heat the culture solution using solar energy, making it possible to secure a wider culture medium area even in a narrow field. It is possible. Moreover, it does not impede sunlight to the plants being cultivated.

In addition, the heat receiving part also has the function of maintaining the posture of the plant, so it is highly practical.

[Brief explanation of drawings]

FIG. 1 is a simplified sectional view showing an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along the - line, FIG. 3 is a cross-sectional view showing another embodiment, and FIG. 4 is a perspective view showing an embodiment of the heat receiving part 7. 1... Cultivation bed, 2... Partition member, 3... Culture medium tank, 7... Heat receiving part, 71... Import, 72
...Outport.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a device provided to heat the culture solution supplied to the cultivation bed in a part of the culture solution circulation path, the device is fixedly provided above the liquid level of the culture medium tank, and A partition member having holes at appropriate intervals through which cultivated plants can be inserted, and a flexible bag-shaped heat receiving member placed on the upper surface of the partition member while being connected to the circulation path at the import and output ports at the ends. A hydroponic culture solution heating device comprising: and a hydroponic culture solution heating device, which is provided so that a cultivated plant can be held between the heat receiving parts or between the heat receiving part and the wall surface of the bed frame. 2. A hydroponic culture solution heating device in which a heat receiving part is arranged in a meandering manner on a partition member so that the walls of the bags are in contact with each other.