Microalgae culture equipment in optical fiber light guide mode

Abstract

The utility model discloses microalgae culture equipment in an optical fiber light guide mode. The microalgae culture equipment comprises an indoor culture space; the light source unit comprises a preset number of sun-tracking light guide lighting devices, and each sun-tracking light guide lighting device is composed of a sun-tracking module, one or more light guide optical fiber tubes, one or more sunlight collecting modules and a light source projection mounting bracket; the microalgae culture unit consists of a culture container mounting bracket, a microalgae culture container, an automatic electrical box, a culture solution circulating module, a nutrient supplementing module, an air CO2 supply module, a culture solution recycling module and an environment monitoring module; and the power supply unit is used for supplying power required by the light source unit, the microalgae culture unit and other units. According to the utility model, the advantages of outdoor sunshine culture and indoor artificial illumination culture are integrated, natural sunlight is obtained as a growth light source through sun-tracking light guide optical fiber illumination, and an indoor mode which is easy to obtain in a culture place is adopted, so that energy conservation and convenience are realized, and a greater contribution is made to net zero carbon reduction.

Description

Technical Field

[0001] The utility model relates to the field of microalgae culture. Specifically, it is a microalgae culture device that collects natural sunlight through a sunlight-tracking light guide system, conducts the light through an optical fiber tube, and provides the light source required for indoor microalgae growth. Background Art

[0002] With the progress of industry and the rapid economic development, more and more wasteland has been developed, and the area for carbon dioxide absorption has decreased rapidly. On the contrary, the economic development has brought more greenhouse gas emissions, resulting in an increasingly serious greenhouse effect. Therefore, the issue of carbon reduction has begun to be taken seriously.

[0003] In recent years, under the wave of ESG, the issues of net-zero carbon reduction, decarbonization, and increasing carbon sinks have been widely discussed and studied. Among them, when it comes to the carbon sink problem, carbon sequestration is the most important. And the natural carbon sequestration hero is microalgae. So what is microalgae? Microalgae belong to algae with a size in the micron scale. Freshwater green algae, also known as chlorella, and saltwater blue algae, also known as spirulina, both belong to microalgae. Microalgae can be used as food, nutritional supplements, feed, fertilizers, raw materials for biodiesel, and for wastewater treatment. It is also a natural carbon absorber. The carbon sequestration efficiency of microalgae is 50 times that of rice and 6 times that of trees. Therefore, the cultivation of microalgae for carbon sequestration has been carried out for many years.

[0004] At present, microalgae carbon sequestration mainly includes outdoor sunlight cultivation and indoor artificial lighting cultivation. The former has the advantage of using natural sunlight as the growth light source outdoors, but its large footprint and difficulty in obtaining land are disadvantages. The latter is easier to obtain land for indoor cultivation, but the energy consumption of the required light source for artificial lighting cultivation is a problem. Summary of the Utility Model

[0005] The main purpose of the utility model is to provide a microalgae culture device with an optical fiber light guide mode to solve the problems of large footprint and high light source energy consumption existing in microalgae carbon sequestration in the prior art.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a microalgae culture device with an optical fiber light guide mode, mainly including: an indoor culture space, a light source unit, a microalgae culture unit, and a power supply unit. It is an indoor microalgae culture device that collects natural sunlight through a sunlight-tracking light guide system, conducts the light through an optical fiber tube, and conducts the sunlight to the microalgae culture container to provide the light source for microalgae growth. In addition, in the microalgae culture unit, a CO2 gas supply module and a culture solution circulation module are set, and an environmental monitoring module is installed at an appropriate position to monitor the number of microalgae in the culture container, the pH value of the culture solution, the environmental temperature, the light irradiation intensity, and the concentration of CO2 in the air, and autonomously adjust the optimal conditions to promote the rapid growth of microalgae.

[0008] Preferably, the indoor cultivation space is inside a single - layer or multi - layer building or a container.

[0009] Preferably, the microalgae cultivation container adopts a vertical three - dimensional multi - layer cultivation mode.

[0010] Preferably, the culture medium circulation module uses a pump to send the culture medium from the culture medium storage tank to the uppermost microalgae cultivation container through a pipeline. The uppermost microalgae cultivation container then transfers the culture medium to the microalgae cultivation container on the next lower layer through a pipeline, and so on until the lowermost microalgae cultivation container sends the culture medium back to the culture medium storage tank through a pipeline.

[0011] Preferably, the culture medium recovery module includes: a recovery tank, pipelines connecting each microalgae cultivation container, and control valves for each pipeline.

[0012] Preferably, the power supply unit is provided by installing a solar cell and a storage battery at the sunny place on the outdoor roof.

[0013] Preferably, an auxiliary lighting unit is added at a predetermined position of the light source projection mounting bracket. The auxiliary lighting unit uses an LED lamp, an energy - saving light bulb, or a fluorescent lamp.

[0014] Preferably, a plant planting unit is added above the microalgae cultivation container.

[0015] The utility model adopts the optical fiber light - guiding mode to use energy - saving natural sunlight as the light source. The indoor site mode is easier to control the appropriate environmental temperature. Moreover, with the environmental sensing feedback automatic electric control mode, it provides suitable nutrient and air conditions to promote better growth efficiency. The utility model combines the advantages of outdoor sunlight cultivation and indoor artificial lighting cultivation, eliminates their disadvantages, uses the chasing sunlight - guiding optical fiber lighting to obtain natural sunlight as the growth light source, and adopts the indoor mode which is easier to obtain for the cultivation place, saving energy and being convenient, which is conducive to wide promotion and makes greater contributions to net - zero carbon reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the structural features of the first embodiment of the utility model;

[0017] Figure 2 is a schematic diagram of the state of the light source unit of the first embodiment of the utility model;

[0018] Figure 3 is a schematic diagram of the operation process of the automatic electrical box of the first embodiment of the utility model;

[0019] Figure 4 is a schematic diagram of the features of the second embodiment of the utility model;

[0020] Figure 5It is a schematic diagram of the structural features of the third embodiment of the present utility model;

[0021] Figure 6 It is a schematic diagram of the auxiliary lighting state of the third embodiment of the present utility model;

[0022] Figure 7 It is a schematic diagram of the auxiliary lighting operation flow of the third embodiment of the present utility model;

[0023] Figure 8 It is a schematic diagram of the structural features of the fourth embodiment of the present utility model;

[0024] Figure 9 It is a schematic diagram of the three-dimensional erection structural features of the sun-tracking module of the fourth embodiment of the present utility model;

[0025] Figure 10 It is a schematic diagram of the co-cultivation characteristics of microalgae and plants of the fifth embodiment of the present utility model. Specific embodiments

[0026] The following further describes the present utility model in conjunction with specific embodiments. It should be understood that the following embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model.

[0027] Please refer to Figure 1 As shown, it is the first embodiment of the present utility model. The structure of the present utility model mainly includes: an indoor cultivation space 10, a light source unit 20, a microalgae cultivation unit 30, and a power supply unit 40.

[0028] Among them, the indoor cultivation space 10 can be the interior of a single-story or multi-story building, or a similar indoor structure composed of containers, mainly used to accommodate the microalgae cultivation unit 30 and the power supply unit 40; the light source unit 20 is composed of one or several sun-tracking optical fiber lighting devices 21, and these sun-tracking optical fiber lighting devices 21 are installed outdoors, and it includes a sun-tracking module 211, one or several optical fiber light guide tubes 212, one or several sunlight collection modules 213, and a light source projection mounting bracket 214 installed in the indoor cultivation space 10.

[0029] The microalgae cultivation unit 30 includes a cultivation container mounting bracket 31, a microalgae cultivation container 32, an automated electrical box 33, a culture solution circulation module 34, a nutrient supplement module 35, an air CO2 supply module 36, a culture solution recovery module 37, and an environmental monitoring module 38. The microalgae cultivation container 32 adopts a vertical three-dimensional multi-layer cultivation mode to effectively utilize the indoor space and increase the number of microalgae cultivated. When the indoor space is large enough, it can also be horizontally extended and arranged. The culture solution circulation module 34 uses a pump to send the culture solution from the culture solution storage tank to the topmost microalgae cultivation container 32 through a pipeline. The upper microalgae cultivation container 32 then transfers the culture solution to the microalgae cultivation container 32 in the next lower layer through a pipeline, and so on, until the lowermost microalgae cultivation container 32 sends the culture solution back to the culture solution storage tank through a pipeline, thus forming a culture solution circulation module 34.

[0030] The culture solution recovery module 37 is used to recover the culture solution. When collecting microalgae, it is also collected through the culture solution recovery module 37. The culture solution recovery module 37 includes a recovery tank 373, pipelines 371 connecting each microalgae cultivation container 32, and a control valve 372 for each pipeline to select the target microalgae cultivation container 32 to be recovered.

[0031] In order to achieve optimal automated control of microalgae cultivation conditions, the environmental monitoring module 38 is installed at an appropriate position and has the following functions: monitoring the number of microalgae, measuring the pH value of the culture solution, measuring the environmental temperature, including the temperature of the indoor space and the culture solution, and also monitoring the light source irradiation intensity and the CO2 content in the air.

[0032] The power source of the power supply unit 40 can be mains electricity or other green energy sources, and is used to supply the electricity required by the light source unit 20 and the microalgae cultivation unit 30.

[0033] Regarding the working mode of the light source unit 20, please refer to Figure 2 As shown, the sun-tracking module 211 of the sun-tracking light guide lighting device 21 includes a motor for controlling the horizontal rotation of the circumferential angle, a motor for controlling the vertical rotation of the elevation angle, a photosensitive sensor, and a sun-tracking control circuit. The control circuit first rotates according to the sun's trajectory, and then the photosensitive sensor accurately positions. When accurately positioned, the front lens of the sunlight collection module 213 will gather the sunlight 221 of the sun 22. The gathered sunlight is then conducted by the second lens to the light guide fiber tube 212 connected thereto. The light guide fiber tube 212 is made of plastic material or materials such as glass and quartz, and extends to an appropriate position indoors to conduct the sunlight to the end of the fiber tube and then project the light onto the microalgae cultivation container 32 to supply the lighting required for the growth of microalgae. Different types of microalgae usually require different irradiation intensities, and at this time, it is necessary to adjust the appropriate number of fiber tubes and the light projection distance to adapt.

[0034] Optionally, in some other embodiments, the second lens may not be installed. When accurately positioning, the front lens of the daylight collection module 213 will gather the daylight 221 of the sun 22, and the gathered daylight is directly conducted to the light guide fiber tube 212 connected thereto.

[0035] Regarding the automatic electrical control mode of the present utility model, please refer to Figure 3 As shown, first, the power supply required for automatic electrical control is provided by the power supply unit 40. The environmental monitoring module 38 transmits the measured values back to the automatic electrical box through various sensors. The operation unit of the electrical box calculates and controls the corresponding modules to make responses. The air CO2 supply module 36 includes an air pump and a flow control valve. The environmental monitoring module 38 transmits the microalgae quantity value and the CO2 content in the air to the automatic electrical box 33. The automatic electrical box 33 is connected to the air CO2 supply module 36 to control the control valve of the air CO2 supply module 36 and transmit the corresponding air volume to the culture solution circulation module 34. The culture solution circulation module 34 includes: a pump, a pipeline leading to the uppermost microalgae culture container 32, and a connecting pipe receiving the lowermost microalgae culture container 32. The environmental monitoring module 38 transmits the microalgae quantity value to the automatic electrical box 33. The automatic electrical box 33 controls the amount sent to the microalgae culture container 32. The nutrient supplement module 35 includes water, nutrients required by microalgae, and acid-base adjusters. The environmental monitoring module 38 transmits the acid-base value of the culture solution to the automatic electrical box 33. The automatic electrical box 33 controls the nutrient supplement module 35 to adjust the culture solution to an appropriate acid-base value range. Through the automatic electrical control mode, the best growth environment for microalgae is provided at any time to promote its most effective growth.

[0036] Next, please refer to Figure 4 which is the second embodiment of the present utility model. The difference from the above-mentioned first embodiment is that the power supply unit 40 is provided by installing a solar cell 41 and a storage battery 42 at the sunlight exposure place on the outdoor roof. This second embodiment can realize the ideal of the green energy optical fiber light guide mode microalgae culture device. For the substitution of green energy here, in addition to using solar cells, wind power generation or small hydropower can also be adopted, depending on the best solution.

[0037] Please continue to refer to Figure 5 、 Figure 6 which is the third embodiment of the present utility model. The difference from the above-mentioned second embodiment is that an auxiliary lighting unit 50 can be added at a predetermined position on the light source projection mounting bracket 214. By means of its light 51, the continuous photosynthesis and growth of microalgae can be maintained or accelerated. In some specific embodiments, the auxiliary lighting unit 50 preferably adopts an LED lamp, and other light sources such as energy-saving bulbs or fluorescent lamps can also be selected.

[0038] Please refer to Figure 7As shown in the figure, the operation process of the auxiliary lighting unit 50 is as follows: First, the automated electrical box 33 receives the environmental light source irradiation intensity value transmitted back by the environmental monitoring module 38. When it is determined that it is necessary, the auxiliary lighting unit 50 is activated. In the above second embodiment, green energy power supply has been achieved. In this third embodiment, in addition to using natural sunlight as the light source, an auxiliary lighting unit 50 is additionally provided to supplement the lighting requirements in case of poor weather or insufficient irradiation intensity, ensuring that the microalgae can continue to perform photosynthesis and maintain carbon fixation and growth.

[0039] As Figure 8 , Figure 9 shown, the fourth embodiment of the present invention is different from the third embodiment in that: the light source unit 20 is installed in a three-dimensional multi-layered manner to increase the efficiency of sunlight collection and thereby provide more for the microalgae cultivation unit 30 to use, and improve the utilization rate and efficiency per unit area.

[0040] Figure 10 The fifth embodiment of the present invention is based on the third embodiment. Above the microalgae cultivation container 32, a plant cultivation unit 60 is additionally provided, aiming to make the present invention a composite-functional plant cultivation device and increase the carbon fixation area and the function of plant cultivation.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various changes can be made to the above embodiments of the present invention. All simple, equivalent changes and modifications made according to the claims and the content of the specification of the present invention application fall within the scope of protection of the claims of the present invention patent. The conventional technical content is not described in detail in the present invention.

Claims

1. A microalgae culture device for optical fiber light guiding mode, characterized in that, Comprising: An indoor cultivation space, a light source unit, a microalgae cultivation unit, and a power supply unit, wherein: The indoor cultivation space is used to accommodate the microalgae cultivation unit and the power supply unit; The light source unit includes a predetermined number of sun-tracking light guide lighting devices, which are installed outdoors and composed of a sun-tracking module, one or more light guide fiber optic tubes, one or more sunlight collection modules, and a light source projection mounting bracket disposed within the indoor cultivation space; The microalgae cultivation unit is composed of a cultivation container mounting bracket, a microalgae cultivation container, an automated electrical box, a culture solution circulation module, a nutrient supplement module, an air CO2 supply module, a culture solution recovery module, and an environmental monitoring module; and The power supply unit is used to supply the electricity required by the light source unit and the microalgae cultivation unit.

2. The microalgae culture device with fiber optic light guiding mode according to claim 1, characterized in that, The indoor cultivation space is the interior of a single-story or multi-story building or a cargo container.

3. The microalgae cultivation device with fiber optic light guiding mode according to claim 1, characterized in that, The microalgae cultivation container adopts a vertical three-dimensional multi-layer cultivation mode.

4. The microalgae culture device with an optical fiber light guiding mode according to claim 1, characterized in that, The culture solution circulation module uses a pump to send the culture solution from the culture solution storage tank to the uppermost microalgae cultivation container through pipelines, and the upper microalgae cultivation container then transmits the culture solution to the microalgae cultivation container on the next lower layer through pipelines, and so on, until the lowermost microalgae cultivation container sends the culture solution back to the culture solution storage tank through pipelines.

5. The microalgae cultivation device with fiber optic light guiding mode according to claim 3, characterized in that, The culture solution circulation module uses a pump to send the culture solution from the culture solution storage tank to the uppermost microalgae cultivation container through pipelines, and the upper microalgae cultivation container then transmits the culture solution to the microalgae cultivation container on the next lower layer through pipelines, and so on, until the lowermost microalgae cultivation container sends the culture solution back to the culture solution storage tank through pipelines.

6. The microalgae cultivation device with fiber optic light guiding mode according to claim 1, characterized in that, The culture solution recovery module includes: a recovery tank, pipelines connecting each microalgae cultivation container, and control valves for each pipeline.

7. The microalgae cultivation device with an optical fiber light guiding mode as described in claim 1, characterized in that, The power supply unit is provided by installing solar cells and storage batteries at the sunny location on the outdoor roof.

8. The microalgae culture device with fiber optic light guiding mode according to claim 1, characterized in that, An auxiliary lighting unit is added at a predetermined position of the light source projection mounting bracket, and the auxiliary lighting unit uses LED lights, energy-saving light bulbs, or fluorescent lights.

9. The microalgae culture device with optical fiber light guiding mode according to claim 1, characterized in that, A plant planting unit is added above the microalgae cultivation container.

10. The microalgae culture device with fiber optic light guiding mode according to claim 2, characterized in that A plant planting unit is added above the microalgae cultivation container.

Images