JPS591477B2 - Chlorella culture device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement of a photosynthetic microbial cell culture device, and in particular, to effectively propagate photosynthetic microbial cells to obtain food for humans, or to
The purpose is to obtain zooplankton feed for fish farms, etc.

Generally, in fish farms, etc., zooplankton is required as feed for small fish, etc., and this zooplankton breeds using chlorella as feed.

The present invention aims to effectively cultivate photosynthetic microorganisms containing Chlorella to propagate plankton, thereby easily and effectively obtaining feed for raising fish and the like.

In order to efficiently reproduce chlorella, it is necessary to provide it with appropriate light energy and carbon dioxide gas.
Generally, when chlorella breeds and its density increases, light does not reach far due to the chlorella's own shadow, making it difficult to give light energy evenly to all chlorella.

In view of these circumstances, the applicant first arranged a large number of point light sources, line light sources, surface light sources, etc. in the chlorella culture tank so that light energy could evenly reach all the chlorella. We proposed various types of chlorella culture equipment.

The chlorella culture device previously proposed by the present applicant mainly includes a large number of light sources disposed within a chlorella culture tank, and the light energy from the light sources is supplied to chlorella. If the chlorella culture tank is made of a transparent material or a light absorbing material, the light energy that reaches the wall of the chlorella culture tank will be transmitted through or absorbed by the wall, making it difficult to utilize the light energy. It was inefficient.

In order to solve this problem, the wall surface of the chlorella culture tank is made into a reflective mirror surface, and the light energy emitted from the optical radiator is reflected by the reflective mirror surface and returned to the chlorella culture tank. A device has also been proposed that allows the light energy from to be used efficiently for culturing chlorella, but in that case, if the entire wall is made into a reflective surface, the internal state cannot be seen from the outside. It was extremely inconvenient.

The present invention has been made to solve the above-mentioned drawbacks of the prior art, and will be described below with reference to the drawings.

FIG. 1 is a schematic plan view for explaining an embodiment of a photosynthetic bacterial cell, for example, a chlorella culture device according to the present invention.
Reference numeral 10 denotes a chlorella culture tank, and as already proposed, the chlorella culture tank 10 is constructed such that carbon dioxide gas is blown into it from the bottom into which a large number of optical radiators 1 are arranged.

In the illustrated example, the chlorella culture tank 10 has a cylindrical structure, but this is not limited to a cylindrical shape, and may have any shape such as a square or a hexagon.

Figures 2 and 3 are side sectional views illustrating an example of a light radiator installed in a chlorella culture tank, respectively.
In the figure, 2 is a light guide cable, 3 is a transparent or semi-transparent cylindrical container, and 4 is a transparent or semi-transparent plate disposed at an angle on the cylindrical container. As already proposed, the light is input into the cylindrical container 3 from the end face of the optical conductor cable 2, and the light input into the cylindrical container is reflected in the radial direction by the transparent or semi-transparent plate 4. Light is projected from the optical radiator 1 in the radial direction to supply light energy to the chlorella in the chlorella culture tank.

In the illustrated example, a light radiator with a cylindrical structure is used, but the present invention is not limited to a light radiator with a cylindrical structure; It goes without saying that a light radiator of any shape, such as a surface light field, can be used.

In the above-mentioned culture apparatus, the present invention particularly provides the wall surface of the culture tank 10 with a reflective mirror surface 20, and the light energy emitted from the optical radiator 1 is reflected by the reflective mirror surface 20 and returned to the chlorella culture tank. All of the light energy emitted from the wall is efficiently used for culturing photosynthetic bacteria, but in that case, if the entire wall surface is made into a reflective mirror surface, as mentioned above, the internal state cannot be seen from the outside. Therefore, in the present invention, 2. the viewing window 10a is provided without making a part of the wall surface a reflective mirror surface.
An opening/closing door 30 is provided in the navel viewing window, and the inside thereof is made into a reflective mirror surface 20, and the opening/closing door is opened only when necessary to observe the inside, and is kept closed at all times.

Therefore, according to the present invention, the state inside the photosynthetic cell culture tank can be observed from the outside when necessary while maintaining the maximum utilization efficiency of light energy in the photosynthetic cell culture tank with a simple configuration. .

[Brief explanation of drawings]

FIG. 1 is a plan view for explaining an embodiment of the photosynthetic cell culture device according to the present invention, and FIGS. 2 and 3 are for explaining examples of optical radiators used in carrying out the present invention, respectively. FIG. 1... Optical radiator, 2... Optical conductor cable, 10... Chlorella culture tank, 20...
... Reflective mirror surface, 30 ... Opening/closing door.

Claims (1)

[Claims] 1 Comprising a photosynthetic bacterial cell culture tank and a large number of light radiators arranged within the photosynthetic bacterial cell culture tank, and transmits light introduced into the optical radiator into the photosynthetic bacterial cell culture tank through the optical radiator. In the photosynthetic microbial cell culture device, the wall surface of the photosynthetic microbial cell culture tank is made into a reflective mirror surface, and a viewing window is provided in a part of the wall surface of the photosynthetic microbial cell culture tank, and the viewing window portion is provided with a viewing window. A photosynthetic cell culture device characterized by having an opening/closing door with a reflective mirror surface on the inside.