Novel microalgae air purification and oxygenation device

Abstract

The utility model discloses a novel microalgae air purification oxygenation device which comprises a shell, a modular filter chamber and a microalgae incubator, wherein the modular filter chamber and the microalgae incubator are arranged in the shell; the shell is provided with an air outlet and an air inlet; the modular filter chamber comprises a plurality of filter layers and a photocatalyst coating purification chamber; the microalgae culture device comprises a microalgae culture solution water tank, a fan case, an aeration head and a liquid discharge pipe, the bottom of the microalgae culture solution water tank is sealed, and the top of the microalgae culture solution water tank is communicated with the air outlet; a light source is arranged at the bottom of the microalgae culture solution tank; the fan case is provided with a centrifugal fan, the aeration head is arranged in the microalgae culture solution water tank and is communicated with the fan case through an air pipe, and the fan case is communicated with the photocatalyst coating purification chamber; the bottom of the microalgae culture solution water tank is communicated with a liquid outlet formed in the lower part of the shell through a liquid outlet pipe. The internal structure is optimized, microalgae culture, microalgae purification, filtration, photocatalyst purification and the like are combined, microalgae air purification is achieved, and the air purification effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of indoor air purification technology, and in particular to a novel microalgae air purification and oxygenation device. Background Technology

[0002] Today, with the acceleration of urbanization and the increased airtightness of modern buildings, indoor air quality has become a growing concern. Studies show that indoor air pollution levels are sometimes even higher than outdoor levels, becoming a significant factor affecting human health. The main sources of indoor air pollution include volatile organic compounds (VOCs) released from building materials, elevated carbon dioxide concentrations, fine particulate matter (PM2.5), and biological pollutants such as mold and bacteria. Especially in densely populated or poorly ventilated places, such as offices, schools, and residences, carbon dioxide concentrations are prone to exceed safe levels, easily leading to symptoms such as fatigue and decreased concentration. Long-term exposure may also affect cognitive abilities and overall health.

[0003] An adult exhales approximately 22.6 liters of carbon dioxide per hour at rest, while a child exhales about half that amount. The concentration of carbon dioxide exhaled per unit time increases exponentially with increased activity levels. The more people in an indoor space, the faster the carbon dioxide concentration rises, especially in crowded places like classrooms, offices, and shopping malls, or in areas with high activity levels such as gyms and indoor sports venues, where carbon dioxide concentrations will rise significantly. Furthermore, carbon dioxide is produced through various means, including cooking with natural gas in the kitchen, smoking, burning incense, the fermentation of food waste, and pet respiration. While improved airtightness in modern buildings contributes to energy conservation and sound insulation, it also leads to poor indoor air circulation, particularly when air conditioning or heating is used, as closed doors and windows further exacerbate carbon dioxide accumulation.

[0004] Carbon dioxide itself is not toxic, but excessively high concentrations can have adverse effects on the human body. When indoor carbon dioxide concentration exceeds 1000 ppm, people may feel stuffy and drowsy; at 2000 ppm, it may cause increased blood acidity, leading to symptoms such as headaches and difficulty concentrating; and at concentrations exceeding 5000 ppm, it may cause severe hypoxia or even death. Studies have shown that prolonged exposure to high concentrations of carbon dioxide can significantly reduce cognitive abilities, especially affecting infants and children, potentially having a negative impact on their brain development. Therefore, maintaining good indoor air circulation and controlling carbon dioxide concentration is crucial for health.

[0005] Microalgae effectively absorb carbon dioxide and release oxygen through photosynthesis. Photosynthesis is the process by which microalgae use light energy to convert carbon dioxide and water into organic matter and oxygen. Microalgae absorb carbon dioxide through free diffusion across their cell membranes. Under the catalysis of photosynthetic pigments (mainly chlorophyll), carbon dioxide and water are converted into organic matter such as glucose in the light-dependent reaction stage, and further synthesized into complex substances such as fats and proteins in the dark-dependent reaction stage. Each year, microalgae fix more than 40% of the global carbon dioxide fixation through photosynthesis, and the photosynthetic productivity of microalgae can reach 50 g / m³. 2 / d, which is equivalent to 10-50 times the carbon sequestration capacity of forests, and its photosynthetic efficiency is far higher than that of terrestrial plants.

[0006] While there are numerous patents for air purification devices based on microalgae cultivation in the existing technology, some shortcomings remain. For example, patent application number CN201410469519.4 proposes an air purification device using microalgae as the purification medium, but it can only clean the air superficially and cannot remove toxic and harmful substances, resulting in a limited purification function. Furthermore, because microalgae cultivation is sensitive to environmental fluctuations and has poor dynamic load adaptability, most air purification devices based on microalgae cultivation suffer from poor long-term operational stability. Therefore, improving the effectiveness of microalgae cultivation and optimizing air purification performance has become a pressing technical problem that needs to be solved in this field. Utility Model Content

[0007] The purpose of this invention is to provide a novel microalgae air purification and oxygenation device. It optimizes the internal structure and cleverly combines technologies such as microalgae cultivation, microalgae purification, filtration, and photocatalytic purification, enabling the microalgae air purification system to operate stably for a long time, reducing the impact of environmental fluctuations and dynamic environmental loads, and improving the air purification effect.

[0008] To achieve the above objectives, this utility model provides the following solution:

[0009] A novel microalgae air purification and oxygenation device includes an outer shell and a modular filter chamber and a microalgae culture device disposed inside the outer shell.

[0010] The upper part of the outer shell has an air outlet, and the lower part has an air inlet;

[0011] The modular filter chamber is disposed inside the air inlet and is connected to the air inlet. The modular filter chamber includes several filter layers and a photocatalytic coating purification chamber. The several filter layers are disposed between the air inlet and the photocatalytic coating purification chamber.

[0012] The microalgae culture device includes a microalgae culture medium tank, a fan housing, an aeration head, and a drain pipe. The microalgae culture medium tank is located in the middle of the outer shell. The bottom of the microalgae culture medium tank is sealed, and the top is connected to the air outlet. A light source is installed at the bottom of the microalgae culture medium tank. The microalgae culture medium tank includes a transparent inner wall, and a light source is installed at the bottom of the transparent inner wall.

[0013] The microalgae culture medium tank is filled with microalgae culture medium, the fan housing is equipped with a centrifugal fan, the aeration head is located inside the microalgae culture medium tank and is connected to the fan housing through an air pipe, and the fan housing is connected to the photocatalytic coating purification chamber.

[0014] The bottom of the microalgae culture medium tank is connected to a drain pipe, which is connected to a drain port located at the bottom of the outer shell.

[0015] Furthermore, the plurality of filter layers include a primary filter layer and a secondary filter layer, wherein the primary filter layer includes a filter mesh layer and a first filter cotton layer, and the secondary filter layer includes a second filter cotton layer and an activated carbon filter layer;

[0016] The inner side of the air inlet is provided with a filter layer, a first filter cotton layer, a second filter cotton layer, an activated carbon filter layer, and a photocatalytic coating purification chamber in sequence from near to far.

[0017] Furthermore, the pore size of the first filter cotton layer is 5 μm, and the pore size of the second filter cotton layer is 2.5 μm.

[0018] Furthermore, the device also includes a carbon dioxide detector disposed inside the housing, and the carbon dioxide detector is provided with a sensing head disposed at the gas outlet for detecting the carbon dioxide concentration at the gas outlet.

[0019] Furthermore, the device also includes a controller, which is electrically connected to the carbon dioxide detector, the centrifugal fan, and the light source, respectively.

[0020] Furthermore, the microalgae culture medium tank adopts a funnel-shaped bottom, and the funnel-shaped bottom is provided with holes for the drainage pipe and the air pipe to enter, and a sealing ring is set at the hole position.

[0021] Furthermore, the funnel-shaped bottom has a transparent inner wall, and a partition is provided below the light source, with the light source located between the transparent inner wall and the partition.

[0022] Furthermore, the bottom of the microalgae culture medium tank is also provided with reinforcing ribs, which are used to fix the funnel-shaped bottom to the side wall of the outer shell.

[0023] Furthermore, the aeration head is made of titanium alloy and has a porous and dense structure.

[0024] Furthermore, the drain outlet is equipped with a valve.

[0025] According to the specific embodiments provided by this utility model, the novel microalgae air purification and oxygenation device provided by this utility model discloses the following technical effects: the device includes a modular filter chamber and a microalgae culture device disposed inside the shell. The modular filter chamber includes several filter layers and a photocatalytic coating purification chamber. Through the optimization of the structural layout, the overall air purification effect of the device is improved.

[0026] The device is equipped with a microalgae culture device, which uses microalgae to purify and oxygenate the air based on microalgae cultivation technology. It cleverly combines technologies such as microalgae cultivation, microalgae purification, multi-layer filtration, activated carbon adsorption, and photocatalytic purification to provide clean, safe, and oxygen-rich air in indoor spaces. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the novel microalgae air purification and oxygenation device according to an embodiment of this utility model;

[0029] Explanation of reference numerals in the attached diagram: 1. Carbon dioxide detector; 1-1. Sensor head; 2. Integrated motherboard; 3-1. Filter layer; 3-2. First filter layer; 4-1. Second filter layer; 4-2. Activated carbon filter layer; 5. Photocatalytic coating purification chamber; 5-1. Light source module; 6-1. Microalgae culture medium tank; 6-2. Fan housing; 6-3. Aeration head; 6-4. Drain outlet; 6-5. Drain pipe; 6-6. Air pipe; 7. Light source; 7-1. Transparent inner wall; 7-2. Partition; 8. Air inlet; 9. Air outlet; 10. Outer shell; 11. Opening / closing top cover. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In this patent description, terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicate the orientation or positional relationship based on the actual orientation or positional relationship shown. They are used only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe orientation or positional relationships in this invention are for illustrative purposes only and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood in conjunction with the embodiments and according to the specific circumstances.

[0032] Unless otherwise expressly specified and limited, the terms "set up," "connected," and "linked" in this patent shall be interpreted broadly. For example, they may refer to a fixed connection, a detachable connection, or an integral connection; they may refer to a direct connection or an indirect connection through an intermediate medium; or they may refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The purpose of this invention is to provide a novel microalgae air purification and oxygenation device. Based on the fact that microalgae can effectively reduce the excessively high carbon dioxide concentration and most pollutants in the air in enclosed spaces, and can also increase the indoor oxygen concentration, this invention cleverly combines technologies such as microalgae cultivation, microalgae purification, activated carbon adsorption, and photocatalytic purification, which can enable the microalgae air purification system to operate stably for a long time and reduce the impact of environmental fluctuations and dynamic environmental loads.

[0034] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1 As shown, the novel microalgae air purification and oxygenation device provided by this utility model includes a shell 10 and a modular filter chamber and a microalgae culture device disposed inside the shell 10.

[0036] The upper part of the outer casing 10 is provided with an air outlet 9 and the lower part is provided with an air inlet 8; for example, the outer casing 10 is a columnar industrial plastic casing; specifically, the air outlet 9 is arranged around the top side of the outer casing 10, and the air inlet 8 is arranged around the bottom side of the outer casing 10, and both the air outlet 9 and the air inlet 8 are provided with metal filters.

[0037] The modular filter chamber is disposed inside the air inlet 8 and is connected to the air inlet 8. The modular filter chamber includes several filter layers and a photocatalytic coating purification chamber 5. The several filter layers are disposed between the air inlet 8 and the photocatalytic coating purification chamber 5.

[0038] Specifically, the filter layers include a primary filter layer and a secondary filter layer. The primary filter layer includes a filter screen layer 3-1 and a first filter cotton layer 3-2. The secondary filter layer includes a second filter cotton layer 4-1 and an activated carbon filter layer 4-2. The inner side of the air inlet 8 is arranged sequentially from near to far: filter screen layer 3-1, first filter cotton layer 3-2, second filter cotton layer 4-1, activated carbon filter layer 4-2, and photocatalytic coating purification chamber 5. Through primary and secondary filtration, large dust particles can be effectively intercepted and retained. The photocatalytic coating purification chamber 5 removes toxic and harmful substances while providing clean air suitable for algal growth, creating a stable environment for microalgae growth. For example, a light source module 5-1 is installed at the top of the photocatalytic coating purification chamber 5, and the other inner surfaces are covered with a thin titanium dioxide coating, deposited electrochemically on the inner surface of the chamber. The specific structure and working principle of the photocatalytic coating purification chamber 5 can also be implemented with reference to conventional techniques in this field, and will not be elaborated here.

[0039] The filter layer 3-1 can be a metal filter, the first filter cotton layer 3-2 has a pore size of 5μm and is used to filter out coarse particles, and the second filter cotton layer 4-1 has a pore size of 2.5μm and is used to filter out fine particles.

[0040] The microalgae culture device 6 includes a microalgae culture medium tank 6-1, a fan housing 6-2, an aeration head 6-3, and a drain pipe 6-5. The microalgae culture medium tank 6-1 is located in the middle of the outer shell 10. The bottom of the microalgae culture medium tank 6-1 is sealed, and the top is connected to the air outlet 9. The microalgae culture medium tank 6-1 includes a transparent inner wall 7-1, that is, the inner wall of the microalgae culture medium tank 6-1 is transparent. A light source 7 is provided at the bottom of the transparent inner wall 7-1. The light source 7 can be a specific blue and white light source with a wavelength of 600-700nm, arranged around the bottom of the transparent inner wall 7-1.

[0041] The microalgae culture medium tank 6-1 is filled with microalgae culture medium. The fan housing 6-2 is equipped with a centrifugal fan. The aeration head 6-3 is located inside the microalgae culture medium tank 6-1 and is connected to the fan housing 6-2 through an air pipe 6-6. The fan housing 6-2 is connected to the photocatalytic coating purification chamber 5. For example, the aeration head 6-3 is made of titanium alloy and has a porous and dense structure. The aeration head 6-3 is located at the bottom of the microalgae culture medium.

[0042] The bottom of the microalgae culture medium tank 6-1 is connected to a drain pipe 6-5, which is connected to a drain port 6-4 located at the lower part of the outer shell 10. The drain port 6-4 is equipped with a valve to control its opening and closing. The top of the outer shell 10 is also equipped with an openable top cover 11, which can be opened when microalgae culture medium water needs to be added.

[0043] The microalgae culture medium tank 6-1 adopts a funnel-shaped bottom, with holes for the drainage pipe 6-5 and the air pipe 6-6 to pass through, and sealing rings are installed at the hole positions. The drainage pipe 6-5 is located at the lowest point of the funnel-shaped bottom to ensure effective drainage.

[0044] The funnel-shaped bottom is a transparent inner wall 7-1, and a partition 7-2 is provided below the light source 7. The light source 7 is located between the transparent inner wall 7-1 and the partition 7-2.

[0045] The device also includes a carbon dioxide detector 1, which is disposed inside the outer casing 10. The carbon dioxide detector 1 is equipped with a sensing head 1-1, which is located at the gas outlet 9 and is used to detect the carbon dioxide concentration at the gas outlet 9. The microalgae culture medium tank 6-1 is also provided with reinforcing ribs, which are used to fix the funnel-shaped bottom to the side wall of the outer casing 10, thereby improving the structural stability.

[0046] The device also includes a controller, which is electrically connected to the carbon dioxide detector 1, the centrifugal fan, and the light source 7. For example, the controller includes an integrated motherboard 2 housed within the housing 10 and a touchscreen display screen disposed outside the housing, the touchscreen display screen being electrically connected to the integrated motherboard 2. The integrated motherboard 2 controls the brightness of the light source 7, collects data from the carbon dioxide detector 1, and controls the air intake and start / stop of the centrifugal fan. For example, the integrated motherboard 2 may be a PLC programming circuit board.

[0047] The novel microalgae air purification and oxygenation device also includes a power module for supplying power to the entire device; the novel microalgae air purification and oxygenation device can be equipped with a power interface for connecting to mains power.

[0048] The working process of the novel microalgae air purification and oxygenation device provided by this utility model is as follows:

[0049] Turning on the integrated motherboard 2 controls the brightness of the light source 7 to provide a suitable growth environment for the microalgae in the microalgae culture tank 6-1. It also controls the start / stop of the carbon dioxide detector 1 and the air intake and start / stop function of the centrifugal fan. The centrifugal fan forces air through the air inlet 8, through a metal filter to remove large particles such as feathers and willow catkins, through a primary filter to remove PM10 coarse particles such as dust, pollen, mold, and mites, through a secondary filter to remove PM2.5 fine particles such as heavy metals and microorganisms, through an activated carbon filter to remove gaseous pollutants such as secondhand smoke, formaldehyde, benzene, and ammonia, and finally through a photocatalytic coating to purify the chamber 5, achieving antibacterial, deodorizing, and air-purifying effects. The filtered air is then atomized into tiny bubbles by the aerator head 6-3 before entering the microalgae culture tank 6-1. The light source 7 surrounds the bottom of the microalgae culture tank 6-1, providing the necessary conditions for photosynthesis in the algae solution. After entering the microalgae culture tank 6-1, residual formaldehyde, benzene, xylene, carbon monoxide, carbon dioxide, and other harmful substances in the air will be absorbed by the microalgae. Through photosynthesis, the microalgae absorb carbon dioxide and release oxygen, purifying the air and producing additional oxygen before being discharged through the outlet 9. The probe of the carbon dioxide detector 1 is placed at the outlet 9 to monitor the carbon dioxide concentration in real time after air purification, thus achieving a good air purification and oxygenation effect.

[0050] This document uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. Furthermore, those skilled in the art will recognize that, based on the ideas of this utility model, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A novel microalgae air purification and oxygenation device, characterized in that, Includes an outer shell (10) and a modular filter chamber and microalgae culture device disposed inside the outer shell (10); The upper part of the outer shell (10) is provided with an air outlet (9) and the lower part is provided with an air inlet (8). The modular filter chamber is located inside the air inlet (8) and is connected to the air inlet (8). The modular filter chamber includes several filter layers and a photocatalytic coating purification chamber (5). Several filter layers are located between the air inlet (8) and the photocatalytic coating purification chamber (5). The microalgae culture device (6) includes a microalgae culture medium tank (6-1), a fan housing (6-2), an aeration head (6-3), and a drain pipe (6-5). The microalgae culture medium tank (6-1) is located in the middle of the outer shell (10). The bottom of the microalgae culture medium tank (6-1) is sealed, and the top is connected to the air outlet (9). The microalgae culture medium tank (6-1) includes a transparent inner wall (7-1), and a light source (7) is provided at the bottom of the transparent inner wall (7-1). The microalgae culture medium tank (6-1) is filled with microalgae culture medium, the fan housing (6-2) is equipped with a centrifugal fan, the aeration head (6-3) is located inside the microalgae culture medium tank (6-1) and is connected to the fan housing (6-2) through the air pipe (6-6), and the fan housing (6-2) is connected to the photocatalytic coating purification chamber (5); The bottom of the microalgae culture medium tank (6-1) is connected to the drain pipe (6-5), and the drain pipe (6-5) is connected to the drain port (6-4) provided at the lower part of the outer shell (10).

2. The novel microalgae air purification and oxygenation device according to claim 1, characterized in that, The filter layers include a primary filter layer and a secondary filter layer. The primary filter layer includes a filter mesh layer (3-1) and a first filter cotton layer (3-2). The secondary filter layer includes a second filter cotton layer (4-1) and an activated carbon filter layer (4-2). The air inlet (8) is provided with a filter layer (3-1), a first filter cotton layer (3-2), a second filter cotton layer (4-1), an activated carbon filter layer (4-2), and a photocatalytic coating purification chamber (5) in sequence from near to far.

3. The novel microalgae air purification and oxygenation device according to claim 2, characterized in that, The first filter cotton layer (3-2) has a pore size of 5 μm, and the second filter cotton layer (4-1) has a pore size of 2.5 μm.

4. The novel microalgae air purification and oxygenation device according to claim 1, characterized in that, The device also includes a carbon dioxide detector (1), which is disposed inside the housing (10). The carbon dioxide detector (1) is provided with a sensing head (1-1), which is disposed at the gas outlet (9) for detecting the carbon dioxide concentration at the gas outlet (9).

5. The novel microalgae air purification and oxygenation device according to claim 4, characterized in that, The device also includes a controller, which is electrically connected to the carbon dioxide detector (1), the centrifugal fan, and the light source (7).

6. The novel microalgae air purification and oxygenation device according to claim 1, characterized in that, The microalgae culture medium tank (6-1) has a funnel-shaped bottom. The funnel-shaped bottom is provided with holes for the drainage pipe (6-5) and the air pipe (6-6) to pass through, and a sealing ring is provided at the hole position.

7. The novel microalgae air purification and oxygenation device according to claim 6, characterized in that, The funnel-shaped bottom has a transparent inner wall (7-1), and a partition (7-2) is provided below the light source (7). The light source (7) is located between the transparent inner wall (7-1) and the partition (7-2).

8. The novel microalgae air purification and oxygenation device according to claim 6, characterized in that, The bottom of the microalgae culture medium tank (6-1) is also provided with reinforcing ribs, which are used to fix the funnel-shaped bottom to the side wall of the outer shell (10).

9. The novel microalgae air purification and oxygenation device according to claim 6, characterized in that, The aeration head (6-3) is made of titanium alloy and has a porous and dense structure.

10. The novel microalgae air purification and oxygenation device according to claim 1, characterized in that, The drain port (6-4) is equipped with a valve.

Images