JPS59125889A - Device for photosynthesis - Google Patents

Abstract

PURPOSE:To feed securely CO2-containing air to a tank for photosynthesis, by jetting CO2-containing air through an air jet inlet to a rotary disc to rotate it, feeding the CO2-containing air to a reaction tank for photosynthesis. CONSTITUTION:A great number of capillary radiator groups 10 are set in parallel in the reaction tank 1 for photosynthesis, and the rotary disc 50 having the air jet nozzle 51a in the horizontal direction and the air jet nozzle 52a in the vertical direction is arranged at the bottom side of the light radiator groups. CO2-Containing air is jetted through the air jet nozzle 51a to the rotary disc, to rotate it, and the CO2-containing air is fed through the air jet nozzle 52a to the reaction tank 1. Namely, when the rotary disc is used instead of an existing impeller, balance of all members can be kept well, and the CO2-containing air can be fed to the reaction tank 1 securely and stably.

Description

DETAILED DESCRIPTION OF THE INVENTION History 1 The present invention relates to photosynthetic substances, such as algae (e.g., chlorella, spirulina, etc.), photosynthetic bacteria, and other artificially synthesized photosynthetic substances (e.g., callus). etc.), etc.).

For example, a chlorella culture device has been proposed as an example of a photosynthesis device, but when culturing chlorella (single-celled microorganisms containing chlorophyll), if chlorella is exposed to light above a certain value, the chlorophyll will be destroyed. They produce toxins (pheophorbite), and photosynthesis does not proceed when the amount of light is below a certain value. Therefore, in order to carry out photosynthesis effectively, it is necessary to provide a certain level of uniform light to cells containing all photosynthetic substances. In order to meet these conditions, it is necessary to pass photosynthetic substances through very narrow gaps, and
It is sufficient to provide a certain amount of light in the direction perpendicular to this gap, and in this way, the attenuation of the light is small.
It is possible to uniformly provide sufficient light to cells containing all photosynthetic substances without changing the wavelength components of the light. In addition, in order to carry out photosynthesis efficiently, it is necessary to uniformly supply sufficient CO2 throughout the area.

In view of the above-mentioned circumstances, the applicant previously proposed a photosynthesis device as shown in Figs. 1 to 3 (
(See Japanese Patent Application No. 57-5261). In other words, in Figure 1,
A side cross-sectional view (cross-sectional view taken along the line II in FIG. 2) for explaining an example of the photosynthetic reaction device previously proposed by the present applicant; FIG. 2" is a cross-sectional view taken along the line II-II in FIG. , Figure 3 shows the first
In the figure, l is a photosynthetic reaction tank, 2 is an auxiliary tank, 3 is a photoconductor cable, and 4 is a pipe for supplying air containing CO2 into the photosynthetic reaction tank l. Inside the photosynthesis reaction tank 1, a large number of thin tube-shaped optical radiators 10 are arranged in parallel as shown in the figure, and their lower ends are closed and each is fitted in a single tube 14 in a watertight manner.

As shown in FIG. 3, these single tubes 14 are integrally joined with their outer peripheries in close contact, and the gaps 15 between each single tube are as follows.
A part of the area (blacked out area in FIG. 3) is blocked. Therefore, the air containing CO2 supplied from the vibrator 4 rises between the optical radiators 10 in the direction of arrow A through the gap 15 near the outer periphery, points toward the center at the upper end, and moves from the center in the direction of arrow B. However, as described above, since the gap 15 near the center is closed, the air that has descended from the center is directed toward the outer periphery at the lower end and circulates inside the photosynthesis reaction tank 1. In this way, the medium moves along with the air at a considerable speed on the outer peripheral wall of the optical radiator 10, so photosynthetic substances do not adhere to the outer peripheral wall of the optical radiator, and are released from the optical radiator. light is no longer blocked, and all photosynthetic substances receive light energy and C.
02 can be evenly supplied. The auxiliary tank 2 is attached to the upper end side of the photosynthesis reaction tank 1 so as to communicate with the photosynthesis reaction tank 1 through the communication port 21.22, and the photosynthetic substances produced as described above are transferred to the auxiliary tank 2. It is taken out through a take-out valve 23 provided at the lower end. At this time, since the medium in the photosynthesis reaction tank is also discharged, the insufficient medium and PH control solution are supplied through the valve 24. Further, at the upper end of the auxiliary tank 2, there is provided a valve 25 for discharging the air pressurized into the photosynthesis reaction tank 1 as described above, and by adjusting the opening degree of the valve, photosynthesis The pressure inside the reaction tank 1 can be adjusted. Furthermore, auxiliary tank 2
Inside, there are instruments 26 such as a thermometer, pressure gauge, pH meter, concentration meter, etc. for monitoring the state of photosynthesis reaction, and these are used to control photosynthesis so that -C1 photosynthesis is carried out most effectively. The state inside the reaction apparatus 1 is controlled, for example, a heat generating/endothermic device 27 is provided in the auxiliary tank 2, and the heat generating/endothermic device 2 is
7 to control the temperature inside the photosynthetic reaction tank, and also notify the time when photosynthetic substances should be taken out. The optical radiator 10 consists of a transparent outer tube 11, a light guide rod 12 inserted into the outer tube 11, a reflecting mirror 13 provided inside the lower end, and the like, and a screw is attached to the upper outer wall of the outer tube 11. lla
is cut, and the screw lla is screwed onto a screw 30a cut in the upper lid 30. Therefore, when the upper lid 30 is removed from the photosynthesis reaction tank 1, the optical radiator lO is also attached to the upper lid 30.
It is taken out together with. Further, the light output end side of the light guide cable 3 can be screwed into the screw 11a cut in the upper end outer wall 11 of the optical radiator 10, and when these are screwed, the optical fiber of the light guide cable 3 can be screwed into the screw 11a. 3
The end of a matches the end of the light guide rod 12 in the optical radiator, and the light transmitted through the optical fiber 3a of the light guide cable 3 is effectively transmitted into the light guide rod 12. ing. The light guide rod 12 is made of quartz, plastic, or the like, and in the case of the illustrated example, a light diffusing material 12a, that is, a material 12a having a refractive index higher than that of quartz or plastic, is placed on its surface at a desired interval. are attached so that the light propagated within the light guide rod is radiated from these material LZa parts.

FIG. 4 is a side sectional view of essential parts showing an example of a photosynthetic reaction device previously proposed by the applicant, and FIG. 5 is a sectional view taken along the line v-v in FIG. The impeller 40 has an air flow passage 41 and an air injection port 42, and the impeller 40 is rotated by air containing C02 supplied from the pipe 4.
It is rotated using the air supplied from the air bearing and air cushion as an air bearing and the air jetted from the air injection port 42 as the main rotational force. In other words, in the illustrated example, the peripheral wall of the pipe 4 has a hole 4a formed diagonally.
The air released from the hole 4a first passes through the impeller 40.
A rotational force in the direction of arrow R is applied to the impeller 40 by hitting the side wall 41a of the air flow passage 41 provided in the
Air is injected from the air injection port 42 through the air flow path 41 to rotate the impeller in the direction of arrow R. At that time, pipe 4
The impeller 40 is levitated by the air pressure released from the upper end, and there is a gap d between the upper end of the pipe 4 and the impeller 40,
occurs, and air flows in the direction of the arrow through the gap d1. On the other hand, air flows through the gap dl and a part of the air released through the hole 4a bored in the side wall of the pipe 4 flows between the outer wall of the pipe 4 and the impeller. 4O through the gap d2 between the inner wall of the impeller 40 and the gap d3 between the bottom of the impeller 40 and the substrate, the impeller 40 is supported by an air cushion by the airflow flowing through the gaps d and d3, and [ I W d
It is supported by an air bearing by the airflow flowing through 2. In this case, if an air flow passage 43 is provided above the impeller 40, an air flow will be generated in the gap d4 between the bottom surface of the photosynthesis reaction tank and the top surface of the impeller, and the impeller 40 will be Can be effectively supported by air cushion. According to this embodiment, the impeller 40 is rotated and the air pressure distribution at the bottom of the photosynthetic reaction tank changes according to the rotation of the impeller 40, so the air circulation route inside the photosynthetic reaction tank changes from time to time. If averaged over time, air containing Co2 will be supplied substantially evenly to all the airflow passages, and the photosynthesis reaction can be carried out more effectively. Also,
Since the medium, photosynthetic substances, etc. that fall to the bottom of the photosynthetic reaction tank are sucked upward by the jet air stream injected from the air injection port 42, there is no possibility that dead bodies of photosynthetic substances, etc. will accumulate at the bottom of the photosynthetic reaction tank. There is no. Furthermore, at that time,
If the air outlet 42 is directed slightly downward, even if dead bodies of photosynthetic substances accumulate in the lower part, the dead bodies will not be scattered upward by the air flow injected from the air outlet 42. Therefore, the bottom of the photosynthesis reactor can be kept clean more effectively. Also, in the figure,
An example has been shown in which the photosynthesis reaction tank l has a hexagonal shape, but when the photosynthesis reaction tank has a polygonal shape (in other words, it is not circular), the air flow passage 41 of the impeller 4o By extending the airflow to emit airflow from the circumferential surface 41b of the impeller in the radial direction of the impeller, air can also be effectively flowed to the airflow passage 15 in the periphery of the photosynthesis reaction tank. The rotation locus of the tip of the impeller is shown in a circle as shown in FIG. Then, when the air injection port 41b is at position a near the wall of the photosynthetic reaction tank, the air resistance of the air injection port 41b is large, and when it is far away from the wall at position b, the air resistance is small. Air can be sent almost equally to both the air flow path in section b and the air flow path in section b. It is also possible to provide the impeller with an air injection port that opens upward, that is, toward the photosynthetic reaction tank, and in this way, air is forced to flow sequentially into the gaps 15 in accordance with the rotation of the impeller. It is possible,
The blockage part (blacked out part in FIG. 3) required in the prior art is no longer necessary, and the same reflux route as in the prior art can be formed in the photosynthesis reaction tank even without the blockage part.

Rule--1 The present invention further improves the photosynthesis device as described above, and specifically uses a rotating disk instead of the impeller, thereby increasing the flow of CO2-containing air into the photosynthesis reaction tank. This ensures reliable and stable supply.

1--1 FIG. 6 is a cross-sectional view of a main part (a cross-sectional view taken along the line Vl-VI in FIG. 7) for explaining one embodiment of the present invention, and FIG.
(2) A plan view seen from the line direction. In the figure, 50 indicates a rotating disk according to the present invention, and the rotating disk 50 has horizontal air injection ports 51a, 51b and vertical air injection ports 52a, 52.
b, and like the impeller, is supported by an air bearing and an air cushion by CO2-containing air supplied from the pipe 4, and has a horizontal air injection port 5'la.

It is rotated in the direction of arrow R by the air injected from 51b, and at the same time, the air injected from vertical injection ports 52a and 52b is supplied into the photosynthesis reaction tank through the gap 15 between the capillary optical radiators 10. Therefore, by using a rotating disk instead of a conventional impeller as in the present invention, it is possible to maintain a good overall balance and ensure the supply of CO2-containing air into the photosynthesis reaction tank. And it can be done stably. Moreover, the culture medium accumulated in the lower part can be effectively expelled into the reaction tank. Note that if the reaction tank section and the rotating disk section are made separable as shown in the figure, manufacturability and maintenance can be facilitated.

FIG. 8 is a sectional view of a main part showing another embodiment of the present invention, and this embodiment has a rotating disk 50 as described above as shown in the figure.
is rotatably supported on the CO2-containing air supply pipe 4 using an airtight bearing ring 60. In this way, the rotary disk can be rotationally supported more stably.

FIG. 9 is a sectional view of a main part for explaining another embodiment of the present invention. In the figure, 70 is a perforated plate, 80 is a tube, and the hole 71 of the perforated plate 70 is inserted through the tube 80. The perforated plate 70 is connected to the gap 15 between the thin tube-shaped optical radiators, and the rotary disk 50 as described above is disposed adjacent to the lower side of the perforated plate 70.

FIG. 1O is an exploded view showing the relationship between the gaps between the capillary optical radiators, the holes in the perforated plate, and the vertical air injection ports of the rotating disk. hole 7
1 is concentric and radial.

A large number of stripes are provided in the shape of a tube, and the holes are communicated with the gaps 15 between the thin tube-shaped optical radiators through a tube 80. Further, the single hole provided in this perforated plate 70 corresponds to the single air hole 52a or 52 provided in the rotating disk 50.
b, and therefore, when the rotating disk 50 is rotated as described above, the rotating disk 50
The air injected from the vertical air injection ports 52a or 52b is sequentially aligned with the single hole 1, for example, 71a, 71b, 71c, etc. of the perforated plate 70 as the rotating disk rotates, These single holes 71a, 71b...
CO2-containing air is simultaneously supplied to the gaps 15 corresponding to the above, that is, the gaps between the thin tube-shaped optical radiators, and the position where the CO2-containing air is supplied changes sequentially as the rotating disk 50 rotates.

Therefore, for example, it is possible to partition the inside of the photosynthesis reaction tank into a plurality of rooms using a partition plate 90 as shown in FIG. 11, and to supply CO2-containing air to each room in turn. For example, 002-containing air is simultaneously supplied to all the gaps in room A, then, as the rotating disk 50 rotates, 002-containing air is simultaneously supplied to all the gaps in room B, and so on. As the disc 50 rotates, CO2-containing air can be supplied sequentially to room C and then to room D. In this way, air resistance is reduced and CO2-containing air can be supplied more smoothly. I can do it.

Effect - 1 - As is clear from the above explanation, according to the present invention, CO2-containing air light can be more reliably and stably supplied into the photosynthesis reaction tank.

[Brief explanation of the drawing]

1 to 3 are diagrams for explaining an example of a photosynthesis device previously proposed by the applicant, in which FIG. 1 is a side sectional view, and FIG. 3 is a sectional view taken along the line ■-■ in FIG.
6 is a side sectional view of essential parts for explaining an embodiment of the photosynthesis device according to the present invention, and FIG. 7 is a sectional view taken along the line ■-■ in FIG. 6. 8 and 9 are cross-sectional views of essential parts for explaining other embodiments of the present invention, respectively, and FIG. FIG. 11 is a plan sectional view showing an example of a photosynthesis reaction tank suitable for applying the embodiment shown in FIG. 9. 1... Photosynthetic reaction tank, 10... Tubular light lag. 11
- Evening, 40... Impeller, 50... Rotating disk, 60.
...bearing, 70...perforated plate, 80...tube, 90...partition plate. Figure 1 Figure 2171 31... 1) ljt) Figure 4, r 5 Figure 6 O Figure 7 1n 1b Figure 8 IO! 2N No. 91. :I Q Figure 10 Figure 11

Claims (1)

[Scope of Claims] (1) A photosynthetic reaction tank, a group of multiple tubular optical radiators installed in parallel in the photosynthetic reaction tank, and an air injection unit installed below the optical radiator group. a rotating disk having an opening; the rotating disk is rotated by injecting air containing CO2 through the air injection port;
1. A photosynthesis apparatus, characterized in that air containing 2 is supplied into the photosynthesis reaction tank. (2) The rotating disk has a horizontal injection port that injects the air in a direction that imparts a rotational moment to the rotating disk, and a vertical injection port that injects the air into the gap between the capillary optical radiator. The photosynthetic device according to claim 1, further comprising a mouth. (3) The photosynthesis device according to claim (1) or (2), wherein the rotating disk is supported by an air bearing using air containing the C02. (4) Claim (1) characterized in that the rotating disk is supported by an airtight bearing.
The photosynthetic device according to item (2) or item (2). (5) a photosynthetic reaction tank, a group of multiple thin tube-shaped light radiators arranged in parallel in the photosynthesis reaction tank, a perforated plate provided below the group of thin tube-shaped light radiators, and the thin tubes. It consists of a tube that connects the gap between the shaped light radiators and the hole of the perforated plate, and a rotating disk provided below the perforated plate and having an air injection port, through which air containing CO2 is supplied. to rotate the rotating disk by injecting
and passing the air containing CO2 through the tube.
"The photosynthesis device is characterized in that: The photosynthesis device according to claim (5), characterized in that it has a port and a vertical injection port for injecting the air toward the holes of the perforated plate. Claim No. 6, characterized in that, when the rotating disk rotates, the vertical injection ports of the rotating disk are provided so as to sequentially face the holes of the perforated plate.
). (8) The perforated plate has a plurality of holes concentrically arranged in the radial direction, and when the rotating disk rotates, the vertical injection port of the rotary disk rotates. The photosynthesis device according to claim (7), wherein the photosynthesis device is provided so as to face the plurality of holes simultaneously and sequentially. (9), a patent characterized in that the photosynthetic reaction tank is partitioned into rooms corresponding to the number of rows, and the gap between the tubular light radiators in each room corresponds to the hole of the one row. A photosynthesis device according to claim (8).