Device and method capable of removing carbon dioxide in air

Abstract

The invention relates to a device and method capable of removing carbon dioxide in air, the device comprises a shell, a fan and an ion electrostatic net, the shell comprises an upper shell and a lower shell, the upper shell is provided with an air inlet, the bottom of the upper shell is a hollow opening facing the lower shell, and the fan is fixed in the upper shell; a gap is reserved on the peripheral side between the upper shell and the lower shell, and an air outlet of the shell is formed; the lower shell is filled with an alkaline aqueous solution; the ion electrostatic net is detachably fixed at the bottom of the hollow opening of the upper shell; the draught fan operates to introduce air into the upper shell and blow the air to the alkaline aqueous solution in the lower shell, and carbon dioxide in the air reacts with the alkaline aqueous solution to achieve the purpose of removing carbon dioxide in the air.

Description

Technical Field

[0001] This invention relates to the field of carbon dioxide removal technology, and more specifically to an apparatus and method for removing carbon dioxide from the air. Background Technology

[0002] In air-conditioned rooms during the summer, because the doors are often closed and ventilation is inadequate, carbon dioxide levels can accumulate. Excessive carbon dioxide can cause headaches, difficulty concentrating, and other negative health effects. Therefore, a key aspect of indoor environmental control is keeping carbon dioxide levels within a low range. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device and method for removing carbon dioxide from the air.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A device for removing carbon dioxide from the air includes a housing, a fan, and an ion electrostatic mesh. The housing comprises an upper shell and a lower shell. The upper shell has an air inlet and a perforated opening at its bottom facing the lower shell. The fan is fixed inside the upper shell. The upper shell is connected directly above the lower shell, and a gap is left around the perimeter between the upper and lower shells to form an air outlet. The lower shell contains an alkaline aqueous solution. The ion electrostatic mesh is detachably fixed to the bottom of the perforated opening in the upper shell. When the fan operates, it draws air into the upper shell and blows it into the alkaline aqueous solution in the lower shell. The carbon dioxide in the air reacts with the alkaline aqueous solution to remove the carbon dioxide from the air.

[0005] Furthermore, a support frame is fixed to the outer side of the upper shell. The support frame has brackets spaced apart along the circumferential direction, and the free ends of each bracket overlap the outer edge of the lower shell.

[0006] Furthermore, one pole of the ion electrostatic grid is connected to the negative pole of the power generator, and the other pole of the power generator is placed in an alkaline aqueous solution.

[0007] Furthermore, the power generator is a negative ion power generator or a low-temperature plasma power generator.

[0008] Furthermore, hollow plastic spheres float on the alkaline aqueous solution.

[0009] Furthermore, the lower shell and the hollow plastic sphere are made of PP or PE.

[0010] Furthermore, the ion electrostatic grid is composed of several carbon fiber emitters.

[0011] Furthermore, the alkaline aqueous solution is a calcium hydroxide aqueous solution formed by dissolving food-grade calcium hydroxide in water; or the alkaline aqueous solution is a potassium carbonate or sodium carbonate aqueous solution.

[0012] Furthermore, the fan is an axial flow fan or a centrifugal fan.

[0013] This invention discloses a method for removing carbon dioxide from the air. When a fan is turned on and operates, indoor air is drawn into the upper shell and blown into an alkaline aqueous solution in the lower shell. The carbon dioxide in the air reacts with the alkaline aqueous solution and is absorbed. This cycle is repeated to remove carbon dioxide from the air. Meanwhile, under the action of rotating wind, a hollow plastic ball rolls on the surface of the alkaline aqueous solution in the lower shell, breaking the thin film formed on the surface of the alkaline aqueous solution.

[0014] By adopting the above technical solution, the beneficial effects of the present invention are as follows: 1. This invention utilizes an alkaline aqueous solution (calcium hydroxide aqueous solution) to absorb carbon dioxide and react to generate a flocculent precipitate of calcium carbonate, thereby achieving the purpose of removing carbon dioxide from the air. Floating hollow plastic spheres are placed in the alkaline aqueous solution. These spheres rotate under the influence of a rotating wind, breaking the thin film on the surface of the alkaline aqueous solution (this film hinders the reaction between carbon dioxide in the air and the alkaline aqueous solution), thus improving the efficiency of carbon dioxide removal from the air.

[0015] 2. An ion electrostatic mesh is installed below the fan blades. When the wind blows downwards, the mesh charges and adsorbs the alkaline aqueous solution, providing a double boost to the surface. Specifically, it functions as follows: 1. Charges airborne carbon dioxide molecules, causing them to collide with the alkaline aqueous solution, enhancing the absorption efficiency of carbon dioxide; 2. Charges airborne viruses and bacteria, causing them to collide with the alkaline solution and be killed, thus purifying the air; 3. Charges airborne dust particles, causing them to collide with the alkaline aqueous solution surface, thus removing dust and avoiding the absorption saturation problem of traditional filters; 4. The negative air ions released by the ion electrostatic mesh are dispersed with the wind, freshening the indoor air.

[0016] 3. The device of the present invention can also increase air humidity to overcome the problem of dry air caused by dehumidification in air-conditioned rooms, which makes it easy for bacteria to grow. 4. The device of the present invention is easy to disassemble and replace with alkaline aqueous solution, which is convenient for daily use and operation. Attached Figure Description

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 This is a schematic diagram of a device for removing carbon dioxide from the air according to the present invention; Figure 2This is a schematic diagram of another embodiment of the device for removing carbon dioxide from the air according to the present invention. Detailed Implementation

[0018] like Figure 1 As shown in Figure 2, the present invention provides a device for removing carbon dioxide from the air, comprising a housing, a fan 3, and an ion electrostatic mesh 4. The housing includes an upper shell 1 and a lower shell 2. The upper shell 1 has an air inlet 11, and the bottom of the upper shell 1 has a hollow opening facing the lower shell 2. The fan 3 is fixed inside the upper shell 1. The upper shell 1 is connected directly above the lower shell 2, and a gap is left on the periphery between the upper shell 1 and the lower shell 2 to form the air outlet of the housing. The lower shell 2 contains an alkaline aqueous solution 6. The ion electrostatic mesh 4 is detachably fixed to the bottom of the hollow opening of the upper shell 1. When the fan 3 operates, it introduces air into the upper shell 1 and blows it into the alkaline aqueous solution 6 in the lower shell 2. The carbon dioxide in the air reacts with the alkaline aqueous solution 6 to form an insoluble precipitate, thereby achieving the purpose of removing carbon dioxide from the air.

[0019] A support frame 5 is fixed to the outside of the upper shell 1. The support frame 5 has brackets spaced apart along the circumference, and the free ends of each bracket overlap the outer edge of the lower shell 2. This structure facilitates the removal of the upper shell 1 from the lower shell 2, making it convenient to replace the alkaline aqueous solution 6 in the lower shell 2.

[0020] One pole of the ion electrostatic mesh 4 is connected to the negative terminal of the power generator, while the other pole of the power generator is placed in the alkaline aqueous solution 6. The ion electrostatic mesh 4, located at the perforated opening of the upper shell 1, serves the following functions: 1. It charges carbon dioxide in the air, causing it to collide with the alkaline aqueous solution 6, thus enhancing the absorption efficiency of carbon dioxide; 2. It charges viruses and bacteria in the air, causing them to collide with the alkaline aqueous solution 6 and be killed, thus purifying the air; 3. It charges and adsorbs dust particles in the air, causing them to collide with the surface of the alkaline aqueous solution, thus removing dust and avoiding the absorption saturation problem of traditional filters; 4. The large number of negative air ions released by the ion electrostatic mesh are dispersed with the wind, freshening the indoor air. It also increases air humidity, overcoming the dryness caused by dehumidification in air-conditioned rooms, which can easily breed bacteria.

[0021] The ion electrostatic grid 4 can be composed of several carbon fiber emitters. The use of carbon fiber material makes the tip corona discharge efficiency of the ion electrostatic grid 4 high, energy consumption low, discharge voltage low, uniform operating range, wear resistance, corrosion resistance, long service life, easy maintenance, and higher efficiency than traditional emitters.

[0022] Hollow plastic spheres 7 float on the alkaline aqueous solution 6. Both the lower shell 2 and the hollow plastic spheres 7 are made of PP or PE to prevent them from dissolving in the alkaline aqueous solution 6.

[0023] In this invention, the preferred alkaline aqueous solution 6 is a calcium hydroxide aqueous solution formed by dissolving food-grade calcium hydroxide in water. At room temperature, the saturation concentration of the calcium hydroxide aqueous solution is 0.173%, requiring a relatively small amount of calcium hydroxide, making it safer to use. After running for a period of time, the calcium hydroxide aqueous solution reacts with carbon dioxide in the air, gradually becoming neutral. The reaction between the calcium hydroxide aqueous solution and carbon dioxide in the air is complete, safe, and pollution-free. Alternatively, the alkaline aqueous solution 6 in this invention can also be a potassium carbonate or sodium carbonate aqueous solution.

[0024] In addition, as an improved technical solution, a CO2 concentration sensor can be added at the air outlet between the upper shell 1 and the lower shell 2, and the fan 3 can be connected to a frequency converter to adjust the fan speed according to the carbon dioxide concentration. The fan speed is increased when the concentration is high to accelerate the absorption of carbon dioxide.

[0025] This invention discloses a method for removing carbon dioxide from the air: A fan 3 is turned on, and the fan 3 operates, drawing indoor air into the upper shell 1 and blowing it into the alkaline aqueous solution 6 (calcium hydroxide aqueous solution) in the lower shell 2. The carbon dioxide in the air reacts with the alkaline aqueous solution 6 to form flocculent matter (calcium carbonate) and precipitates. This process is repeated to remove carbon dioxide from the air. Meanwhile, a hollow plastic ball 7, under the action of rotating wind, rolls on the surface of the alkaline aqueous solution 6 in the lower shell 2, breaking the calcium carbonate film formed on the surface of the alkaline aqueous solution 6 (the calcium carbonate film hinders the reaction between carbon dioxide in the air and the alkaline aqueous solution 6).

[0026] In the above embodiments, such as Figure 1 As shown, fan 3 is an axial flow fan. As another embodiment, such as... Figure 2 As shown, fan 3 can also be a centrifugal fan.

[0027] The specific embodiments of the present invention have been described above. However, those skilled in the art should understand that this is merely an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principles and essence of the present invention, but all such changes and modifications fall within the protection scope of the present invention.

Claims

1. A device for removing carbon dioxide from the air, characterized in that: The device includes a housing, a fan, and an ion electrostatic mesh. The housing comprises an upper shell and a lower shell. The upper shell has an air inlet and a perforated opening at its bottom facing the lower shell. The fan is fixed inside the upper shell. The upper shell is connected directly above the lower shell, and a gap is left around the perimeter between the upper and lower shells to form an air outlet. The lower shell contains an alkaline aqueous solution. The ion electrostatic mesh is detachably fixed to the bottom of the perforated opening in the upper shell. When the fan operates, it draws air into the upper shell and blows it into the alkaline aqueous solution in the lower shell. Carbon dioxide in the air reacts with the alkaline aqueous solution to remove carbon dioxide from the air.

2. The device for removing carbon dioxide from air according to claim 1, characterized in that: A support frame is fixed to the outer side of the upper shell. The support frame has brackets spaced apart along the circumferential direction, and the free ends of each bracket overlap the outer edge of the lower shell.

3. The device for removing carbon dioxide from air according to claim 1, characterized in that: One pole of the ion electrostatic grid is connected to the negative pole of the power generator, and the other pole of the power generator is placed in an alkaline aqueous solution.

4. The device for removing carbon dioxide from air according to claim 3, characterized in that: The power generator is a negative ion power generator or a low-temperature plasma power generator.

5. The device for removing carbon dioxide from air according to claim 1, characterized in that: Hollow plastic spheres float on the alkaline aqueous solution.

6. The device for removing carbon dioxide from air according to claim 5, characterized in that: The lower shell and the hollow plastic sphere are made of PP or PE.

7. The device for removing carbon dioxide from air according to claim 1, characterized in that: The alkaline aqueous solution is a calcium hydroxide aqueous solution formed by dissolving food-grade calcium hydroxide in water; or the alkaline aqueous solution is a potassium carbonate or sodium carbonate aqueous solution.

8. The device for removing carbon dioxide from air according to claim 1, characterized in that: The ion electrostatic grid consists of several carbon fiber emitters.

9. The device for removing carbon dioxide from air according to claim 1, characterized in that: The fan is either an axial flow fan or a centrifugal fan.

10. A method for removing carbon dioxide from air, using the apparatus according to any one of claims 1-9, characterized in that: When the fan is turned on, it draws indoor air into the upper shell and blows it into the alkaline aqueous solution in the lower shell. Carbon dioxide in the air reacts with the alkaline aqueous solution and is absorbed. This cycle is repeated to remove carbon dioxide from the air. Meanwhile, the hollow plastic ball rolls on the surface of the alkaline aqueous solution in the lower shell under the action of the rotating wind, breaking the thin film formed on the surface of the alkaline aqueous solution.

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