KR101104902B1 - Dust collecting filter for printer having carbon nanotubes-chitosan membrane, filtering system comprising the same and printer having the same - Google Patents

Abstract

The present invention relates to a dust collecting filter for a printer including a carbon nanotube-chitosan membrane, a filtering system and a printer including the same, and in particular, a dust collecting for a printer including a carbon nanotube-chitosan membrane for collecting fine particles of a printer using an electric field. A filter, a filtering system and a printer including the same. The present invention can provide a dust collecting filter for a printer including a carbon nanotube-chitosan membrane which can effectively collect fine particles generated in a printer using a carbon nanotube-chitosan membrane and an electric field, and a filtering system and a printer including the same. have. In addition, the present invention can provide a dust collecting filter for a printer including a carbon nanotube-chitosan membrane made of carbon nanotubes and a chitosan membrane, which are environmentally friendly materials, and a filtering system and a printer including the same. In addition, the present invention can provide a dust collecting filter for a printer including an environmentally friendly carbon nanotube-chitosan membrane by forming an electric field required for dust collection with a power supplied from a solar cell, and a filtering system and a printer including the same.

Dust collection, filters, carbon nanotubes, chitosan, electric fields

Description

Dust collection filter for printers including carbon nanotube-chitosan membrane, filtering system and printer including the same

The present invention relates to a dust collecting filter for a printer including a carbon nanotube-chitosan membrane, a filtering system and a printer including the same, and in particular, a dust collecting for a printer including a carbon nanotube-chitosan membrane for collecting fine particles of a printer using an electric field. A filter, a filtering system and a printer including the same.

Dust is one of particulate matter floating or scattering in the air and usually has a particle size range of 0.1 to 500 micrometers. These dusts can be classified into falling dust and floating dust according to the size of the particles. Dropping dust is heavy and easy to settle, and floating dust is hard to settle because the particles are fine and light. In addition, fine particles of suspended dust can be further classified into PM-10 having a particle size of 10 micrometers or less, PM-2.5 having a particle size of 2.5 micrometers or less, and the like.

The smaller the particle size, the greater the health impact. Accordingly, developed countries have introduced environmental standards for fine particles in the late 90s. As a result of the environmental health burden (EBD) evaluation, which the World Health Organization (WHO) has presented as an environmental health index, it was found that air pollution and indoor air quality in large cities have the greatest impact on public health. Moreover, as the results of research showing that the microparticles generated by the printer installed in the office can accumulate in the lungs and cause tumors, and the interest in environmentally friendly materials are amplified, there is a need for an environmentally friendly microparticle dust collection system. Is increasing.

Disclosure of Invention An object of the present invention is to provide a dust collecting filter for a printer including a carbon nanotube-chitosan membrane capable of effectively collecting fine particles generated in a printer, a filtering system and a printer including the same.

Another object of the present invention is to provide a dust collecting filter for a printer including a carbon nanotube-chitosan membrane made of an environmentally friendly material, a filtering system and a printer including the same.

In order to achieve the above object, the present invention provides a fixing member, a carbon nanotube-chitosan membrane which is provided on the fixing member, and a carbon nanotube and chitosan composite, and an electrode for supplying power to the carbon nanotube-chitosan membrane. It provides a dust collecting filter for a printer comprising a. The fixing member includes a first fixing member and a second fixing member, and the carbon nanotube-chitosan membrane is provided between the first fixing member and the second fixing member. In addition, the electrode includes an anode electrode and a reduction electrode provided in the first fixing member and the second fixing member, respectively, and the fixing member includes an insulator.

The present invention also provides a fixing member, a carbon nanotube-chitosan membrane which is provided on the fixing member and is a carbon nanotube and chitosan composite, an electrode for supplying power to the carbon nanotube-chitosan membrane, and a power source for the electrode. It provides a dust collecting filtering system for a printer, characterized in that it comprises a power supply for supplying. The fixing member includes a first fixing member and a second fixing member, and the carbon nanotube-chitosan membrane is provided between the first fixing member and the second fixing member. In addition, the electrode may include an oxidation electrode and a reduction electrode provided in the first fixing member and the second fixing member, respectively, and the power supply unit may include a solar cell.

In addition, the present invention is a printer comprising a printing paper supply port for supplying paper, a printing unit for printing the paper supplied to the printing paper supply unit and a printing paper output port for outputting the paper printed in the printing unit, the fixing member And a dust collecting filter for a printer provided in the fixing member and having a carbon nanotube-chitosan membrane which is a carbon nanotube and chitosan composite, an electrode for supplying power to the carbon nanotube-chitosan membrane, and a power supply unit for supplying power to the electrode. It provides a printer comprising a. The fixing member includes a first fixing member and a second fixing member, and the carbon nanotube-chitosan membrane is provided between the first fixing member and the second fixing member. The electrode includes an anode electrode and a reduction electrode provided in the first fixing member and the second fixing member, respectively, in this case, a power supply unit for supplying power to the anode and the reduction electrode. The power supply unit may include a solar cell. The dust collecting filter is located at the printing paper output port. In addition, the printer may further include an exhaust port, in which case the dust collecting filter is located at the exhaust port.

The present invention can provide a dust collecting filter for a printer including a carbon nanotube-chitosan membrane which can effectively collect fine particles generated in a printer using a carbon nanotube-chitosan membrane and an electric field, and a filtering system and a printer including the same. have.

In addition, the present invention can provide a dust collecting filter for a printer including a carbon nanotube-chitosan membrane made of carbon nanotubes and a chitosan membrane, which are environmentally friendly materials, and a filtering system and a printer including the same.

In addition, the present invention can provide a dust collecting filter for a printer including an environmentally friendly carbon nanotube-chitosan membrane by forming an electric field required for dust collection with a power supplied from a solar cell, and a filtering system and a printer including the same.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know. Like reference numerals in the drawings refer to like elements.

1 is a conceptual diagram of a filtering system according to the present invention, Figure 2 is a schematic perspective view of a dust collecting filter according to the present invention. 3 is a schematic perspective view showing that the filtering system according to the present invention is mounted to the output port of the printer, and FIG. 4 is a schematic perspective view showing the filtering system according to the present invention to the exhaust port of the printer. 2 illustrates that the filtering system according to the present invention is used in a printer.

As shown in FIG. 1, the filtering system according to the present invention includes a dust collecting filter 100 and a power supply unit 200.

The dust collecting filter 100 is for collecting fine particles into the electric field and the membrane using the power supplied from the power supply unit 200, as shown in FIG. 2, the fixing member 110, the electrode 120, Membrane 130.

The fixing member 110 is for fixing the electrode 120 and the membrane 130, and this embodiment exemplifies a rectangular fixing member based on a plan view. However, the present invention is not limited thereto. That is, the fixing member 110 of the present invention may have a circular shape, an elliptic shape, a semi-circular shape, a semi-elliptic shape, and a polygonal shape as well as a rectangular shape based on the plan view. The fixing member 110 includes a first fixing member 112 and a second fixing member 114.

The first fixing member 112 is to fix and support the membrane 130 and the anode 122, and the membrane 130 and the anode 122 are provided on one surface of the first fixing member 112 to be fixed. do. The first fixing member 112 may be an insulator, and the insulator may include an inorganic material including synthetic resin, glass, and the like. This embodiment is an example of a rectangular shape having a predetermined thickness with respect to the planar resin as the first fixing member 112.

The second fixing member 114 is for fixing and supporting the reduction electrode 124. The reduction electrode 124 is provided on one surface of the second fixing member 114 and fixed. Preferably, the second fixing member 114 has the same shape as the first fixing member 112. Since the first fixing member 112 has a rectangular shape with respect to the plan view, the second fixing member 114 may also have a rectangular shape. It is preferable. However, the present invention is not limited thereto, and the shapes of the first fixing member 112 and the second fixing member 114 may be different from each other. In addition, the second fixing member 114 may be made of the same material as the first fixing member 112 or made of different materials, and the present embodiment is made of synthetic resin in the same manner as the first fixing member 112. An example of the second fixing member 114 having a rectangular shape based on the plan view is illustrated.

The electrode 120 is for forming an electric field by a power source applied from the outside, and includes an anode 122 and a cathode 124.

The anode 122 is used to generate an electric field by receiving an external power source together with the reduction electrode 124. The anode 122 may be manufactured in a thin plate shape and provided to the first fixing member 112. The anode 122 has a thin rectangular shape with respect to the top view similar to the first fixing member 112, but is preferably manufactured to have an area smaller than that of the first fixing member 112. Of course, the anode 122 may have a different shape from the first fixing member 112.

The reduction electrode 124 is manufactured in the same thin plate shape as the anode 122 and is provided in the second fixing member 114. Like the anode, the reduction electrode 124 may be manufactured to have a thin rectangular shape with respect to the planar view similar to the second fixing member 114 but to have a smaller area than the second fixing member 114. In addition, the anode 122 and the cathode 124 are respectively provided in the first fixing member 112 and the second fixing member 114, the first fixing member 112 and the second fixing member 114, respectively ) Is provided between.

The membrane 130 is used to collect microparticles contained in the air by using electrical properties of the nanoparticles, and includes carbon nanotubes-Chitosan Membrane (CNT-CS MB).

The carbon nanotube-chitosan membrane is a combination of carbon nanotubes and chitosan, and since chitosan itself is a material obtained in nature, there is an advantage that other environmentally harmful elements do not occur when used as a filter. In addition, the carbon nanotubes have a diameter of 2 to several tens of nanometers, and the length is 1 centimeter or less, and the ratio of length to diameter is 10 ⁶ or more. Since such carbon nanotubes form a carbon nanotube network on the surface of the membrane, their structural properties can also capture fine particles of 1 micrometer or less. That is, when a momentary dipole is formed by the movement of electrons in a non-polar molecule, a molecule located near the non-polar molecule also generates a temporary polarization to generate an induced dipole. Fine particles can be collected by van der Waals forces, which are the attraction force of such momentary dipoles and induced dipoles. The carbon nanotube-chitosan membrane, which is a combination of carbon nanotubes and chitosan, has the property of conductive polymer, so that the electric field is applied to the filtering system with the voltage supplied from an external power source, so that the microparticles are electrically charged rather than using only van der Waals forces. You can combine more. The carbon nanotube-chitosan membrane may be prepared by mixing carbon nanotubes and chitosan in a weight ratio of 1: 2 to 1:20. At this time, in order to maximize the dust collection effect, it is preferable to mix carbon nanotubes and chitosan in a weight ratio of 1: 3.25 to 1: 6.5.

The power supply unit 200 supplies power to the electrode 120 of the dust collecting filter 100 to generate an electric field, and includes a solar cell.

As shown in FIGS. 3 and 4, which are commonly used, the filtering system according to the present invention can print out the printing paper output port through which the printed matter of the printer is output to the outside and the fine particles existing in the printer can be moved to the outside of the printer. It can be attached to the exhaust port. Of course, as shown, the dust collecting filter of the filtering system is preferably provided on the lower surface of the printing paper output port so that the printing paper output from the printing paper output port can be smoothly output to the outside. However, the present invention is not limited thereto, and the dust collecting filter may be provided at an upper end or a side end of the printing paper output port. In addition, it is preferable that the dust collecting filter provided at the exhaust port is also provided at the edge of the exhaust port so as not to block the exhaust port. In this case, the filtering system according to the present invention includes a laser printer including a printing unit, which is a component necessary for printing such as an engine, a drum, a toner and a heating roller, and an ink jet printer, a color printer, and a printing paper output port and / or an exhaust port. Applicable to printers. In addition, the filtering system applied to the output port of the printer is prepared in a size of 210 ㅧ 10 (mm 크기 mm) to fit the A4 size when manufacturing the membrane by mixing carbon nanotube and chitosan, and the membrane to be installed on the exhaust side of the printer Made to fit the size of the exhaust vent. Of course, it is effective to improve the performance of the dust collecting the electrode by using a conductive metal at both ends of the membrane, and supplying a DC power by connecting it to an external power source, for example, a solar cell electrode and a wire. In addition, when the filtering system according to the present invention is applied to a printer, since the low power is used, the power generated from the solar cell using solar heat may be used as an external power source. In addition, according to this, it is possible to show a continuous dust collection effect even when the power is not supplied to the printer. Of course, the present invention is not limited thereto, and the printer power may be used as an external power source of the filtering system.

On the other hand, the present invention may further include a power control device 300 for adjusting the power produced in the solar cell to suit the filtering system, and a rechargeable battery 400 for charging the produced power.

The following briefly describes the performance experiment of the filtering system according to the present invention having the above-described structure with reference to the drawings.

5 is a resistance measurement graph of the electrical transmission characteristic value of the filtering system according to the present invention installed in the output port of the printer, Figure 6 is a resistance to the electrical transmission characteristic value of the filtering system according to the present invention installed in the exhaust port of the printer Value measurement graph. That is, FIGS. 5 and 6 compare resistances before and after particles generated in the printer are collected in the filtering system by converting the measured current change into resistance. In addition, Figure 7 is a surface scanning electron microscope (Scanning Electron Microscope, SEM) image of the nanotube-chitosan composite according to the present invention before the dust collection experiment, Figure 8 is a surface scanning of the nanotube-chitosan composite according to the present invention after the dust collection experiment Electron microscope image. Figure 8 was installed in the exhaust port of the printer was applied to the electric field was carried out dust collection experiment. In this case, the right image 2 of FIGS. 7 and 8 enlarges the dotted line region of the left image 1.

At this time, the electrical transmission characteristics were measured by a semiconductor parameter analyzer (Agilent, E5262A), and the change in the current flowing through the measurement object was measured while adjusting the voltage range to -30V to 30V. To compare the measurement results, R + sample generated an electric field by applying voltage to the solar cell and R + ref without voltage applied. The experiment was conducted by placing the sample in the same position. In this experiment, we installed a printer, installed a filtering system at the output and exhaust ports of the printer, and then supplied power to the filtering system using 14V, 40mA (0.55W) solar cells connected in series. In addition, the solar cell array, power storage battery and power regulator connected in series were made into a single module so that power was supplied uniformly to prevent voltage difference according to the intensity of solar radiation. It was.

Referring to FIG. 5, when the filtering system according to the present invention is installed at the output port of the printer, the resistance value of R + ref. Without applying an electric field before the experiment is about 15 MΩ, and the resistance value of R + ref. After the experiment. It can be seen that the resistance is increased by 26 times at about 400MΩ. On the contrary, the R + sample showed a resistance value of about 3MΩ before the experiment, but the result of the experiment by applying the electric field, it was confirmed that the resistance value of 730 times increased to about 2200MΩ in the R + after.

Referring to FIG. 6, when the filtering system according to the present invention is installed at the exhaust port of the printer, it can be seen that the change before and after the experiment coincides with the result of FIG. 5. That is, the resistance value of R + ref. Without applying the electric field before the experiment was 76 MΩ, but after the experiment R + ref. The resistance of was increased by about 9.7 times to 740MΩ. However, it can be seen that the resistance value before the experiment of R + applied with the electric field increased by about 132 times from 11.6MΩ to 1533MΩ after the experiment. Of course, even though the electric field is not applied, the structural characteristics of the carbon nanotube-chitosan membrane and the van der Waals forces and the electrostatic attraction of the microparticles generated in the printer have been shown to show some filtering effects. The electrical coupling between the particles and the filtering system adds up to the ability to filter out more microparticles.

That is, referring to FIG. 7, it can be seen that the nanotubes are present on the surface of the chitosan membrane, which is a conductive polymer. In addition, referring to Figure 8, it can be seen that the nanotube network appears on the surface of the composite, it can be seen that a large amount of fine particles are collected on the surface according to the direction of the prominent nanotube network on the surface. As such, when the microparticles are collected in a large amount on the surface of the nanotube-chitosan composite, it is understood that as the current flows through the membrane, the current resistance is disturbed due to an increase in contact resistance, thereby increasing the overall resistance. Through this, carbon nanotube-chitosan composites, which are eco-friendly materials and conductive polymers, can be applied to the filtering system, and it is possible to collect dust on the nanoparticles generated in the printer. In addition, the present invention has advantages in terms of energy saving since it can be driven at low power without using a separate power source using a solar cell as an external power source.

Although described above with reference to the drawings and embodiments, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit of the invention described in the claims below. I can understand.

1 is a conceptual diagram of a filtering system according to the present invention;

2 is a schematic perspective view of a dust collecting filter according to the present invention;

Figure 3 is a schematic perspective view showing that the filtering system according to the present invention is mounted on the output port of the printer.

4 is a schematic perspective view showing that the filtering system according to the present invention is mounted in the exhaust port of the printer.

5 is a resistance measurement graph for the electrical transmission characteristic value of the filtering system according to the present invention installed in the output port of the printer.

6 is a resistance measurement graph for the electric transmission characteristic value of the filtering system according to the present invention installed in the exhaust port of the printer.

7 is a surface scanning electron microscope image of a nanotube-chitosan composite according to the present invention before dust collection experiments.

8 is a surface scanning electron microscope image of a nanotube-chitosan composite according to the present invention after a dust collection experiment.

<Explanation of symbols for the main parts of the drawings>

100: dust collecting filter 110: fixing member

112: first fixing member 114: second fixing member

120: electrode 122: anode

124: cathode 130: membrane

200: power supply unit 300: power regulator

400: rechargeable battery

Claims (15)

A fixing member coupled to the printing paper output or exhaust port of the printer; A carbon nanotube-chitosan membrane which is bonded to the printer by the fixing member and is a carbon nanotube and chitosan composite material for collecting fine particles generated in the printer; And An electrode for supplying power to the carbon nanotube-chitosan membrane; Dust collecting filter for a printer comprising a. The method according to claim 1, The fixing member includes a first fixing member and a second fixing member, The carbon nanotube-chitosan membrane is a dust collecting filter for a printer, characterized in that provided between the first fixing member and the second fixing member. The method according to claim 2, The electrode is a dust collecting filter for a printer, characterized in that it comprises an anode and a reduction electrode provided in the first fixing member and the second fixing member, respectively. The method according to claim 1, Dust collecting filter for a printer, characterized in that the fixing member includes an insulator. A fixing member coupled to the printing paper output or exhaust port of the printer; A carbon nanotube-chitosan membrane which is bonded to the printer by the fixing member and is a carbon nanotube and chitosan composite material for collecting fine particles generated in the printer; An electrode for supplying power to the carbon nanotube-chitosan membrane; And A power supply unit supplying power to the electrode; Dust collecting filtering system for a printer comprising a. The method according to claim 5, The fixing member includes a first fixing member and a second fixing member, And the carbon nanotube-chitosan membrane is provided between the first fixing member and the second fixing member. The method according to claim 6, The electrode is a dust collecting filtering system for a printer, characterized in that it comprises an anode and a reduction electrode provided in the first fixing member and the second fixing member, respectively. The method according to claim 5, Dust collecting filtering system for a printer, characterized in that the power supply comprises a solar cell. A printer comprising a printing paper supply port for supplying paper, a printing unit for printing the paper supplied to the printing paper supply unit, and a printing paper output port for outputting the paper printed in the printing unit, A fixing member coupled to the printing paper output port of the printer; A carbon nanotube-chitosan membrane, which is coupled to the printer by the fixing member and is a carbon nanotube and chitosan composite material for collecting fine particles generated in the printer; An electrode for supplying power to the carbon nanotube-chitosan membrane; And A power supply unit supplying power to the electrode; Printer comprising a dust filter having a. The method according to claim 9, The fixing member includes a first fixing member and a second fixing member, And the carbon nanotube-chitosan membrane is provided between the first fixing member and the second fixing member. The method according to claim 10, The electrode may include an anode electrode and a reduction electrode provided in the first fixing member and the second fixing member, respectively. The method of claim 11, And a power supply for supplying power to the anode and the cathode. The method according to claim 12, The power supply unit printer characterized in that it comprises a solar cell. delete The method according to claim 9, The printer further includes an exhaust vent, And the dust collecting filter is located at the exhaust port.

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