KR20100010921A - The oxygen generator for indoor air purification using micro algae - Google Patents

Abstract

PURPOSE: An oxygen generator for indoor air purification using micro algae is provided to purify the indoor by supplying oxygen produced by the micro algae in a photosynthesis process after cultivating the micro algae with carbon dioxide existed indoor. CONSTITUTION: An oxygen generator for indoor air purification using micro algae improve quality of contaminated indoor air by collecting oxygen generated in a photosynthesis process and to remove excess carbon dioxide existed indoor. The micro algae is recycled as feeds for animals or fertilizer for plants. The oxygen generator includes a micro algae cultivator(1), a sparger(6), a controller(7), a carbon dioxide sensor(10a), a carbon dioxide sensor(10b), an oxygen sensor(60), an optical sensor(70), a fodder feeding hole(80), a vacuum pump(100a), a carbon dioxide supply pump(100b), a filter(200a) for filtering carbon dioxide, and an LEDs.

Description

The oxygen generator for indoor air purification using micro algae}

The present invention is an oxygen generator using a biomaterial that is completely different from the conventional oxygen generators. The microalgae is grown by supplying carbon dioxide that is excessively present in the room by using microalgae that photosynthesize to grow microalgae and photosynthesis. It is a technology to purify indoor air by supplying the oxygen produced to the room.

There are many oxygen generator-related devices for supplying insufficient oxygen to the room. Patents for oxygen generators so far applied are: 1) 10-2004-0021354 Oxygen Generator for LG Electronics Air Conditioner 2) 10-2005-0104472 C & K Oxygen Generator 3 10-2005-0075978 Samsung Electronics Oxygen Generator 4) 10-2000-0068067 LG Electronics Oxygen Generator 5) 10-2002-0029790 Air Conditioner with Oxygen Generation Function 6) 10-2008-0111721 Oxus Oxygen Generator The patent application is a situation where the application is limited to a structure that generates oxygen by separating nitrogen and oxygen present in the air by applying pressure to most porous zeolite materials. The present invention uses the photosynthesis phenomenon of microalgae, a bio-organic material, which is completely different from the conventional oxygen generator using mechanical air compression and zeolite, to supply excess carbon dioxide in the room, and to generate oxygen in the room while generating microalgae photosynthesis. It is a device that supplies and purifies indoor air, and there is no equipment similar to the present invention. The present invention is a micro algae (micro algae) that can only be seen in a microscope to grow in a certain space by the microalgae photosynthesis while the chloroplast inside the photoelectric reaction to consume carbon dioxide and generate oxygen The device was configured to remove excess carbon dioxide and supply oxygen to the room.

The most efficient and safe way to consume excess carbon dioxide and generate oxygen to improve indoor air quality is to use the microalgae photosynthesis principle. Microalgae that exist on the earth are marine microalgae and freshwater microalgae, and when any microalgae grows, they emit oxygen while growing by photosynthetic action by light and carbon dioxide. It is possible to make an oxygen generator for indoor air purification.

Freshwater algae have to make conditions for photosynthesis well. When LEDs with wavelengths of 430nm and 680nm, which are the most suitable for the photoreaction of chloroplasts in uncooked algae, are used as a light source, photosynthesis is very efficient and many carbon dioxide is consumed. It also loses oxygen. Of course, photosynthesis occurs even when the indoors are supplied and reflected by indoor fluorescent lamps or outside sunlight. The present invention can automatically detect and control conditions that can cause photosynthesis well during the day or night, and can increase or decrease photosynthesis rate according to the degree of pollution of indoor air, and leave only a part of the microalgae after all growth is completed. The rest was dried and supplied either as fertilizer for surrounding plants or as fish food in a fishbowl for continued use.

Oxygen generator produced according to the present invention can be supplied as a fertilizer or feed using microalgae obtained as a by-product as well as indoor air purification can be seen that its utilization value is very diverse.

Oxygen generator structure using a microalgae is a carbon dioxide (in the indoor air 30) so that the microalgae photosynthesis after the water (2) and a constant concentration of the microalgae (3) in the container (1) having a constant capacity 4a) has been attached to the device to collect and supply separately. The air supply device 100a is responsible for sucking air into a container in which microalgae can be cultured once, and the sucked air is inhaled because oxygen and nitrogen (40) and carbon dioxide (4a) are mixed. It was configured to send only carbon dioxide (4b) in the air to the microalgae incubator using a dedicated filter (200a) that can selectively pass only the carbon dioxide in the air. As a means for causing the carbon dioxide passed through the filter to be supplied to the incubator, a carbon dioxide was present as bubbles 5 inside the incubator to uniformly supply the inside of the incubator using a sparger 6 having a 0.5 mm hole. A small vacuum pump was used as the indoor air suction pump 100a. As the photosynthetic light source, LEDs 400a and 400b having a specific wavelength in the indoor fluorescent lamp 300 may be used. The microalgae are equipped with 680nm wavelength LED (400a) and 430nm wavelength LED (400b) which respond well to chlorophyll a and chlorophyll b present in the interior to maximize the photosynthetic effect to maximize oxygen production and carbon dioxide consumption. Consists of. Microalgae culture rate is determined according to the degree of photosynthesis, so that the amount of light is abundant and the supply of carbon dioxide is abundant, so that active photosynthesis is generated and generates a lot of oxygen. ) Detects the carbon dioxide concentration present in the indoor air and if the carbon dioxide concentration is greater than the set value, the indoor air suction pump 100 is operated to supply the excess carbon dioxide to the microalgal incubator and the microalgae is supplied carbon dioxide. By using light around the microalgae incubator, photosynthesis consumes carbon dioxide and releases oxygen 20 as a result of photosynthesis. If the amount of carbon dioxide in the indoor air is equal to or less than the set value, the microalgae photosynthesis reaction proceeds very slowly when the pump for carbon dioxide supply flowing into the microalgae incubator stops, thereby releasing very little air. If the indoor light energy is low or many, the CdS light sensor 70 attached to the outside of the incubator detects the presence of the room light energy, and if the amount of carbon dioxide suddenly increases in the room, the carbon dioxide detection sensor detects this and then the controller 700 ) Maximizes photosynthesis by simultaneously operating the 430nm and 680nm LEDs, which activate the indoor air suction pump and induce photosynthesis very actively, maximizing the amount of carbon dioxide present in the room. Make sure you release a lot of oxygen. The growth conditions of microalgae are temperature, carbon dioxide, nutrients and light energy. Therefore, we selected chlorella that grows well between 20 ~ 30 degrees, which is the indoor temperature where humans live. By supplying an appropriate amount through the food inlet 80 was configured to control the microalgal culture rate. When the microalgae chlorella grows and the number of individuals per unit volume increases, the color becomes darker even with the naked eye, so it is detected by the color sensor 90 and the oxygen sensor 60 mounted inside the microalgae incubator. The oxygen concentration data and the sensor 10a data for measuring carbon dioxide in the air and the carbon dioxide sensor 10b data present in the microalgae incubator were sent to the controller to configure the most optimal oxygen generation amount to be introduced into the room. The small fan 50 is mounted on the incubator so that the oxygen 20a generated by the microalgae photosynthesis can be released into the room. The gas discharged out of the incubator does not photosynthesize because of the carbon dioxide supplied to the microalgae. Since the remaining surplus carbon dioxide (4d) and oxygen (20b) r is discharged in the state of the mixed gas 50, the function of filtering only carbon dioxide while inhaling the mixed gas (50) discharged into the room using the micro air inhaler (100b) Using the filter (200b) having a flow back to the microalgae incubator, the oxygen (20) was not passed through the filter to be released into the room.

Microalgae When a large-scale cultivation facility combines the technology of capturing a large amount of oxygen generated during photosynthesis and compressing and storing it in an oxygen tank, the biodiesel obtained from microalgae cultivation and the nutritional supplement obtained from by-products are naturally used during microalgae cultivation. It is possible to generate and collect oxygen by linking the oxygen generated by industrial use, so it can be applied to the use that can produce oxygen very economically.

1: microalgae incubator

2: water

3: microalgae

4a: CO2 in indoor air

4b: CO2 filtered in indoor air

4c: surplus carbon dioxide left for photosynthesis

4d: filtered carbon dioxide

4a: CO2 in indoor air

5: carbon dioxide bubble supplied through the sparger

6: sparger

7: controller

10a: CO2 sensor for indoor air detection

10b: CO2 sensor for detecting air inside the incubator

20a: Oxygen released into the room

20b: Oxygen mixed with carbon dioxide released from the incubator

20c: oxygen discharged through a carbon dioxide filter

30: indoor contaminated air

40: Oxygen and nitrogen present in indoor contaminated air

50: mixed oxygen and carbon dioxide gas from the incubator

60: oxygen sensor located inside the incubator

70: light sensor for detecting light intensity

80: feed hole for microhold culture

100a: Vacuum pump for indoor air suction

100b: pump for supplying carbon dioxide to the microalgal incubator

200a: Filter for selectively filtering carbon dioxide in indoor air

300: indoor fluorescent lamp

400a: chlorophyll a photosynthetic dedicated 680nm wavelength LED

400b: chlorophyll b photosynthesis only 430nm wavelength LED

500: Blowing fan to supply oxygen generated indoors

Claims (4)

By collecting oxygen generated during photosynthetic reaction of microalgae, it improves polluted indoor air quality and removes excess carbon dioxide present in the room. After growing, microalgae are dried and reused as animal feed or flower manure. Oxygen generator for indoor air purification using microalgae configured to be possible Oxygen generator for indoor air purification using a microalgae consisting of a fluorescent lamp, LED as a light source to induce the microalgae photosynthesis in claim 1. In the case of the LED illumination light source of claim 2, the oxygen generator for indoor air purification using the microalgae consisting of using the LED having a wavelength of 680nm and 4380nm, which is the wavelength of light best absorbed by chlorophyll a, chlorophyll b present in the microalgae .       Oxygen generator for indoor air purification using a microalgae configured to selectively filter the excess carbon dioxide present in the room to the inside of the microalgal incubator.

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