WO2016186316A1 - Air purifier - Google Patents

Abstract

Disclosed is an air purifier using a sheet-type heating element. The air purifier, according to one embodiment of the present invention, comprises: a suction port; a dust collecting part for purifying air introduced from the suction port; and a steam plasma generation module for supplying steam to the air introduced to the dust collecting part from the suction port, wherein the steam plasma generation module comprises a water storage part, a heater comprising a sheet-type heating element for heating water in the water storage part, and an electrode for electrically discharging steam generated by the heater, wherein the sheet-type heating element comprises, for 100 parts by weight of a heating paste composition, 3-6 parts by weight of carbon nanotube particles, 0.5-30 parts by weight of carbon nanoparticles, 10-30 parts by weight of a mixed binder, 29-83 parts by weight of an organic solvent, and 0.5-5 parts by weight of a dispersant, wherein the mixed binder comprises a heating paste composition having epoxy acrylate, polyvinyl acetal, and phenol-based resin mixed, or hexamethylene diisocyanate, polyvinyl acetal, and phenol-based resin mixed.

Description

air cleaner

The present invention relates to an air cleaner using a plane heater.

The present invention relates to an air cleaner, and more particularly, to an air cleaner that can effectively remove fine dust particles.

In general, an air cleaner is a device that filters air or dust in the air to clean the air. The air cleaner can be broadly divided into a stand type and a side table according to its shape. Hereinafter, in the present specification, for convenience of description, the present invention will be described by taking a stand type as an example.

1 is a perspective view showing the appearance of a conventional air cleaner, Figure 2 is a cross-sectional view showing the internal configuration of a conventional air cleaner.

1 and 2, the first suction port 11 is formed in the upper front of the main body 10, the second suction opening 12 is formed in the lower portion, the discharge port 13 is formed in the upper side and the upper portion The operation panel 14 is provided. The interior of the main body 10 is divided into a first dust collecting space 15 and a second dust collecting space 16 of the lower, the first dust collecting space for collecting small dust particles in the first dust collecting space 15 of the upper The apparatus 20 is installed and behind it is a first blower 30 composed of a blower fan 32 and a motor 33 for blowing the purified air toward the discharge port 13.

In the lower second dust collecting space 16, a second dust collecting device 40 for collecting large dust particles is installed and blown to suck air from the second suction opening 12 and blow the air toward the second dust collecting device 40. The second blower 50 composed of the fan 52 and the motor 53 is installed. In addition, a communication passage 61 is formed in a partition plate partitioning the first dust collecting space 15 and the second dust collecting space 16, and fine dust passing through the second dust collecting device 40 is filtered through the communication passage 61. Intermediate filter 62 is installed to allow.

In the first dust collecting device 20, the antimicrobial prefilter 21, the electrostatic precipitating electrostatic filter 22, and the fine dust collecting filter 23 are arranged in order from the front to the rear. On the other hand, the second dust collector 40 has an inlet 42 is formed in the upper side portion, the outlet 44 is formed in the upper central portion and the cyclone dust collector 41 formed with a dust outlet 43 in the lower portion and installed below The dust collecting container 46 is included.

The conventional air cleaner configured as described above is operated as follows.

When the air cleaner is operated through the operation panel 14 provided on the main body 10, the first and second blowers 30 and 50 operate to thereby operate the indoors through the first and second suction ports 11 and 12. Inhalation of the air takes place. At this time, since the dust contained in the inhaled air has relatively small dust particles on the upper side and relatively large dust particles on the lower portion due to the specific gravity difference, small dust particles are sucked toward the first suction opening 11 and the second suction opening. Large dust particles are sucked toward (12).

Therefore, the small dust particles sucked together with the air through the upper first suction port 11 are collected while passing through the filters of the first dust collector 20 in sequence. In addition, the air purified through the first dust collecting device 20 is blown toward the discharge port 13 by the operation of the first blowing device 30 and then supplied to the indoor space.

Large dust particles sucked together with air through the lower second inlet 12 are blown into the cyclone dust collector 41 of the second dust collector 40 by the operation of the second blower 50, and the cyclone In the process of turning inside the dust collecting container 41 is attached to the inner surface of the cyclone dust collecting container 41 is collected. And dust collected in the cyclone dust collector 41 flows down through the dust discharge port 43 of the lower portion is accumulated in the dust collecting container 46.

In addition, the primary purified air passing through the cyclone dust collecting container 41 passes through the intermediate filter 62 made of the fine dust collecting filter and flows into the first dust collecting space 15 to perform secondary purification. That is, fine dust that is not collected while passing through the cyclone dust collector 41 is collected through the intermediate filter 62. The air purified through the intermediate filter 62 is blown toward the discharge port 13 by the operation of the first blower 30 together with the purified air while passing through the first dust collector 20, and then supplied to the indoor space. do.

However, such an air cleaner has a problem in that power consumption is increased, operating noise is large, and the main body is large because an additional blower fan 52 and a motor 53 for driving the air cleaner are required to increase dust collection efficiency in a cyclone. In addition, because the relatively light fine dust particles are not collected by the cyclone, but are collected by a layered filter and an intermediate filter, there is a problem in that maintenance costs due to replacement and cleaning of the filter are increased.

The problem to be solved by the present invention is to provide an air purifier capable of maximizing the amount of dust collected by the cyclone by generating a steam plasma.

The problem to be solved by the present invention is to provide an air purifier capable of rapidly generating steam by using a heater including a planar heating element.

In order to solve the above technical problem, the air purifier according to an embodiment of the present invention; A dust collecting unit for purifying the air flowing from the suction port; And a steam plasma generating module for supplying steam to the air introduced from the suction port to the dust collecting unit, wherein the steam plasma generating module comprises: a water storage unit; A heater composed of a surface heating element for heating water in the water storage part; And an electrode for discharging steam generated by the heater.

The planar heating element is 3 to 6 parts by weight of carbon nanotube particles, 0.5 to 30 parts by weight of carbon nanoparticles, 10 to 30 parts by weight of a mixed binder, 29 to 83 parts by weight of an organic solvent, and 0.5 wt. To 5 parts by weight, wherein the mixed binder includes an epoxy acrylate, a polyvinyl acetal, and a phenolic resin, or a hexamethylene diisocyanate, polyvinyl acetal, and a phenolic resin.

The mixed binder may be 10 to 150 parts by weight of polyvinyl acetal resin, 100 to 500 parts by weight of phenolic resin based on 100 parts by weight of epoxy acrylate or hexamethylene diisocyanate.

The air purifier may further include 0.5 to 5 parts by weight of the silane coupling agent based on 100 parts by weight of the heating paste composition.

The carbon nanotube particles may be multi-walled carbon nanotube particles.

The organic solvent is selected from carbitol acetate, butyl carbitol acetate, DBE (dibasic ester), ethyl carbitol, ethyl carbitol acetate, dipropylene glycol methyl ether, cellosolve acetate, butyl cellosolve acetate, butanol and octanol May be two or more mixed solvents.

The heating paste composition may be formed by screen printing, gravure printing or comma coating on a substrate.

The substrate may be a polyimide substrate, fiberglass mat or ceramic glass.

The coating on the top surface of the planar heating element, may further include a protective layer formed of an organic material having a black pigment, such as silica or carbon shock rack.

According to the present invention, by using a surface heating element, water can be heated quickly to generate steam, and by supplying steam plasma to the air, the fine dust particles are formed into large dust masses by agglomeration of steam plasma, and then a cyclone Purification ability can be improved by collecting dust.

In addition, according to the present invention, since only one blower fan and a motor are used, an additional blower fan and a motor are not required, thereby reducing power consumption and operation noise, and miniaturization is possible.

In addition, according to the present invention, since pure water is used as a plasma source by steaming, it is possible to obtain the effect of humidifying dry indoor air, and clean air without ozone as compared with the case of using atmospheric air as a plasma source. Can be obtained.

1 is a perspective view showing the appearance of a conventional air cleaner

Figure 2 is a cross-sectional view showing the internal configuration of a conventional air cleaner

Figure 3 is a perspective view showing the configuration of an air cleaner according to an embodiment of the present invention

4 is a side view of FIG. 3

5 is a perspective view illustrating an appearance of the steam plasma generating module of FIG. 3.

FIG. 6 is a cutaway perspective view taken along the line VI-VI of FIG. 5; FIG.

7 is a perspective view of the cut along the cutting line VII-VII of FIG.

8 is a perspective view of the cut along the cutting line VIII-VIII of FIG.

9 is an image of a planar heating element specimen prepared using a heating paste composition according to the present invention

10 is an image of the heat stability test appearance of the planar heating element samples prepared according to the Examples and Comparative Examples.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

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

Figure 3 is a perspective view showing the configuration of an air cleaner according to an embodiment of the present invention, Figure 4 is a side view of Figure 3, Figure 5 is a perspective view showing the appearance of the steam plasma generating module of Figure 3, Figure 6 is Figure 5 Fig. 7 is a cutaway perspective view taken along the cutting line VI-VI, Fig. 7 is a cutaway perspective view taken along the cutting line VII-VII of Fig. 5, and Fig. 8 is a cutaway perspective view taken along the cutting line VIII-VIII of Fig. 5.

3 and 4, the air cleaner 1 according to an embodiment of the present invention, the main body 10 having an external shape of a rectangular parallelepiped, and the suction port 12 formed on the front surface of the main body 10 And a dust collecting part 70 formed inside the main body 10 to purify the air introduced from the suction port 12, a suction duct 20 connecting the suction port 12 and the dust collecting part 70, and a suction duct ( Steam plasma generating module 100 for supplying steam to the lower portion of the 20, the blowing fan 52 is formed on the upper side of the dust collecting portion 70 to suck the outside air from the inlet 12, the dust collecting portion 70 and blowing It comprises a filtration filter 80 formed between the fan 52, and the discharge port 13 for discharging the air purified by the dust collecting section 70 and the filtration filter 80.

The main body 10 includes an operation panel 14 in which a control button for displaying and controlling the operation state of the air cleaner 1 is formed.

The dust collector 70 has a conical shape to pivot the air in order to filter heavy particles in the air introduced into the cylindrical portion 71 and the air introduced into the cylindrical portion 71 through the suction duct 20. The cyclone 72 is formed and the dust outlet 76 for discharging the heavy particles, the dust collecting container 73 for collecting the heavy particles filtered under the cyclone (72), and the air purified by discharging the heavy particles It consists of the discharge duct 75 discharged from the dust collector 70.

Here, in order to impart centrifugal force to allow the air introduced into the dust collecting unit 70 to swing inside the cyclone 72, a blowing fan 52 that sucks from the suction port 12 to the dust collecting unit 70 and the same. The driving motor 53 is formed on the upper part of the dust collecting part 70 which is the downstream side of the dust collecting part 70. That is, the air sucked through the suction port 12 by the blower fan 52 flows into the cyclone, which is the dust collecting part 70, and rotates along the inner surface of the cyclone 72 of the cyclone. In this process, the relatively large dust particles contained in the air and the dust agglomerated by steam are attached to the inner surface of the cyclone 72 and collected through the dust outlet 76 by the inclination of the inner surface of the cyclone 72. Accumulated in the container 73, the air is discharged through the discharge duct 75 of the cylindrical portion 71 along the flow flow 11 formed by the blowing fan 52.

When the dust particles discharged through the dust outlet 76 is accumulated in the dust collecting container 73, the user can simply remove the dust particles accumulated by separating and emptying the dust collecting container 73. In addition, the user of the air cleaner can determine the degree of contamination of the indoor air by the amount of dust accumulated in the dust collecting container (73).

The filtration filter 80 is installed between the discharge duct 75 and the discharge port 13 of the cyclone cylindrical portion 71 to remove the dust particles not collected by the dust collecting portion 70. Here, the filtration filter 80 is composed of a HEPA filter. Hephatilter is a high-performance dust collection filter that can remove particles up to 0.1 microns in size from the air passing through and effectively remove pollen, allergens, dust, fine dust, tobacco smoke or pet hair.

The steam plasma generating module 100 is installed on the lower side of the suction duct 20 between the dust collecting part 70 and the suction port 12, and supplies steam to the outside air introduced through the suction port 12, thereby providing the steam. The dust in the air in the suction duct 20 aggregates with each other by the electrostatic force. Here, since the steam plasma generating module 100 is installed below the suction duct 20, even if there is no separate injection mechanism, steam can be introduced into the suction duct 20 by its buoyancy.

More specifically, as shown in Figures 5 to 8, the steam plasma generating module 100, the water storage unit 110 for receiving water for generating steam and steam from the water contained in the water storage unit Steam plasma generating unit 120 for generating a, and the electrode 132 formed to apply a discharge to the steam generated in the steam plasma generating unit 120.

Here, the water storage unit 110 is a mounting portion for seating the housing 121 surrounding the steam plasma generating unit 120 to communicate with the injection port 111 formed through the upper side to supply water and the steam plasma generating unit 120 112, an outlet 113 for supplying the water in the water storage 110 to the steam plasma generator 120, and a stopper 114 for opening and closing the injection port 111. The water storage unit 110 is formed in parallel with the housing 121 of the steam plasma generating unit 120 it is possible to miniaturize the steam plasma generating module 100.

The steam plasma generating unit 120 has a housing 121 that is formed and fixed to the mounting portion 112 of the water storage unit 110 while having an inner space, and is installed vertically on the upper side and a heater consisting of a planar heating element The porous ceramic material along the plate direction on both sides of the 122, the electrode 132 for discharging the steam generated by the heater and the water in the water storage unit 110, the planar heating element heater 122 on both sides It consists of a plurality of dispersions 124 formed to extend. The heater 122 may quickly heat the water stored in the water storage unit 110 by using a surface heating element. The detailed configuration of the planar heating element will be described later.

At this time, the housing 121 has a hexahedron shape, the upper end is formed in an open shape, and the heater electrode mounting portion 125 for mounting the heater electrode 123 for supplying power to the heater 122 is formed on both upper sides. At the lower end, a fixing part 126 is formed to fix the heater 122 and the dispersion 124. In addition, the inner surface of the mounting portion 112 of the water storage unit 110 is formed so as not to leak the steam is joined with the outer surface of the bent extending portion of the fixing portion 126 of the housing 121.

In addition, the heater electrode mounting part 125 is formed as a hole (not shown) so that the rod-shaped heater electrode 123 is fitted, and the heater 122 and the dispersion 124 are fixed to the fixing part 126 so that the housing ( The end is bent outwardly by a certain length so as not to be separated from the 121). The heater 122 and the dispersion 124 are mounted to the fixing part 126 of the housing 121 so that steam plasma or steam charged in the housing 121 does not leak. At this time, the dispersion 124 is fixed so as to be exposed to a certain portion out of the fixing portion 126 in order to absorb the water supplied from the outlet 113 of the storage 110.

In addition, as shown in FIG. 7, the dispersion 124 is elongated to directly contact water in the water storage unit 110, but the heater 122 configured as a planar heating element is installed so as not to directly contact water. In addition, even if the water level of the water storage unit 110 is high, due to the water diffusion acceptance limit of the dispersion 124 itself, it is possible to prevent a large amount of water flowing into the dispersion 124 at the same time, the water storage unit Even if the water level of 110 is low, some water is steadily sucked up into the dispersion 124 by a capillary phenomenon or the like.

On the other hand, the dispersion 124 is installed on both sides of the heater 121 can increase the evaporation efficiency, the dispersion 124 is formed of a porous member to increase the diffusion effect of the water and at the same time to ensure long life It is made of ceramic material.

The cover 130 is mounted in the upper opening of the housing 121. The cover 130 has a plurality of discharge ports 131 for discharging steam thereon, the electrodes 132 are mounted on both sides thereof, and a surface discharge plasma generator (not shown) on the inner surface thereof. Is formed. The plasma surface discharge part serves to effectively generate plasma.

Hereinafter, the planar heating element will be described in detail.

The planar heating element may be formed by screen printing, gravure printing (or roll-to-roll gravure printing) or comma coating (or roll-to-roll comma coating) of a thick film-forming heating paste composition (hereinafter, a heating paste composition) on a substrate.

First, referring to the exothermic paste composition, specifically 3 to 6 parts by weight of carbon nanotube particles, 0.5 to 30 parts by weight of carbon nanoparticles, 10 to 30 parts by weight of a mixed binder, and 29 to organic solvents based on 100 parts by weight of the exothermic paste composition. 83 parts by weight and 0.5 to 5 parts by weight of the dispersant.

The carbon nanotube particles may be selected from single-walled carbon nanotubes, double-walled carbon nanotubes, multi-walled carbon nanotubes, or mixtures thereof. For example, the carbon nanotube particles may be multi wall carbon nanotubes. When the carbon nanotube particles are multi-walled carbon nanotubes, the diameter may be 5 nm to 30 nm, and the length may be 3 μm to 40 μm.

The carbon nanoparticles may be, for example, graphite nanoparticles, and the diameter may be 1 μm to 25 μm.

The mixed binder serves to allow the exothermic paste composition to have heat resistance even in the temperature range of about 300 ° C., and includes epoxy acrylate or hexamethylene diisocyanate, polyvinyl acetal, and the like. Phenolic resin has a mixed form. For example, the mixed binder may be a mixture of epoxy acrylate, polyvinyl acetal, and phenolic resin, or may be a mixture of hexamethylene diisocyanate, polyvinyl acetal, and phenolic resin. In the present invention, by increasing the heat resistance of the mixed binder, even if the heat generated at a high temperature of about 300 ℃ has the advantage that there is no change in resistance of the material or breakage of the coating film.

Herein, the phenolic resin means a phenolic compound including phenol and phenol derivatives. For example, the phenol derivative may include p-cresol, o-Guaiacol, Creosol, catechol, 3-methoxy-1,2-benzenediol (3 -methoxy-1,2-Benzenediol), Homocatechol, Vinylguaiacol, Syringol, Iso-eugenol, Methoxyeugenol, o O-Cresol, 3-methyl-1,2-benzenediol, (z) -2-methoxy-4- (1-propenyl) -phenol ( (z) -2-methoxy-4- (1-propenyl) -Phenol), 2, .6-diethoxy-4- (2-propenyl) -phenol (2,6-dimethoxy-4- (2-propenyl) ) -Phenol), 3,4-dimethoxy-Phenol, 4-ethyl-1,3-benzenediol, Resol phenol, 4-methyl-1,2-benzenediol (4-methyl-1,2-Benzenediol), 1,2,4-benzenetriol (1,2,4-Benzenetriol), 2-methoxy-6-methylphenol (2-Methoxy-6-methylphenol), 2-Methoxy-4-vinylphenol or 4-ethyl-2-methoxy-phenol (4-ethyl-2-methoxy-Phenol) Such as Information that is not.

The mixing ratio of the mixed binder may be a ratio of 10 to 150 parts by weight of polyvinyl acetal resin and 100 to 500 parts by weight of phenolic resin based on 100 parts by weight of epoxy acrylate or hexamethylene diisocyanate. If the content of the phenolic resin is 100 parts by weight or less, the heat resistance characteristics of the heat-paste composition is lowered, and if it exceeds 500 parts by weight, there is a problem that the flexibility is lowered (brittleness increase).

The organic solvent is used to disperse the conductive particles and the mixed binder. Carbitol acetate, butyl carbotol acetate, dibasic ester, ethyl carbitol, ethyl carbitol It may be at least two mixed solvents selected from acetate, dipropylene glycol methyl ether, cellosolve acetate, butyl cellosolve acetate, butanol and octanol.

On the other hand, the dispersion process can be applied to a variety of commonly used methods, for example through the ultra-sonication (Roll mill), bead mill (Bead mill) or ball mill (Ball mill) process Can be done.

The dispersant is to make the dispersion more smoothly, and a conventional dispersant used in the art such as BYK, an amphoteric surfactant such as Triton X-100, SDS and the like and a ionic surfactant may be used.

The exothermic paste composition according to an embodiment of the present invention may further include 0.5 to 5 parts by weight of the silane coupling agent based on 100 parts by weight of the exothermic paste composition.

The silane coupling agent functions as an adhesion promoter to promote adhesion between the resins in the formulation of the exothermic paste composition. The silane coupling agent may be an epoxy containing silane or a merceto containing silane. Examples of such silane coupling agents include epoxy and include 2- (3,4 epoxy cyclohexyl) -ethyltrimethoxysilane, 3-glycidoxytrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 3-glycidoxypropyltriethoxysilane, containing amine groups, N-2 (aminoethyl) 3-amitopropylmethyldimethoxysilane, N-2 (aminoethyl) 3-aminopropyltrimethoxysilane , N-2 (aminoethyl) 3-aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyltriethoxysil, 3-triethoxysil-N- (1,2-dimethyl Butylidene) propylamine, N-phenyl-3-aminopropyltrimethoxysilane, containing merceto, 3-mercetopropylmethyldimethoxysilane, 3-mercetopropyltriethoxysilane, isocyanate Contained 3-isocyanatepropyltriethoxysilane and the like and are limited to those listed above. No.

Wherein the substrate is polycarbonate, polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyimide, cellulose ester, nylon, polypropylene, polyacrylolintril, polysulfone, polyester sulfone, polyvinylidene fluoride , Glass, glass fiber (matte), ceramic, SUS, copper or aluminum substrate, etc. may be used, but is not limited to those listed above. The substrate may be appropriately selected depending on the application field of the heating element or the use temperature.

The planar heating element prints the drying paste composition according to the embodiments of the present invention on the substrate in a desired pattern through screen printing or gravure printing, and after drying and curing, the printing and drying / It can be formed by forming an electrode by curing. Alternatively, after printing and drying / curing the silver paste or the conductive paste, the heating paste composition according to the embodiments of the present invention may be formed by screen printing or gravure printing.

On the other hand, the surface heating element may further include a protective layer coated on the upper surface. The protective layer may be formed of silica (SiO₂). When the protective layer is formed of silica, the heating element has an advantage of maintaining flexibility even if coated on the heating surface.

Hereinafter, the heat generating paste composition for forming a thick film and the planar heating element using the same according to the present invention will be described in detail. The following test examples are only examples for explaining the present invention, and the present invention is not limited by the following test examples.

Test Example

(1) Preparation of Examples and Comparative Examples

As shown in Table 1 below, examples (three types) and comparative examples (three types) were prepared. Note that the composition ratios shown in Table 1 are described in weight percent.

	Example 1	Example 2	Example 3	Comparative Example 1	Comparative Example 2	Comparative Example 3
CNT particles	4	5	6	4	5	6
CNP Particles	8	9	15	-	-	-
Mixed binder	20	15	22	-	-	-
Ethyl cellulose	-	-	-	10	12	14
Organic solvent	63	67	52	82	79	76
Dispersant (BYK)	5	4	5	4	4	4

In the case of Examples, CNT particles and CNP particles (Examples 1 to 3) were added to a carbitol acetate solvent according to the composition of [Table 1], BYK dispersant was added, and dispersion A was prepared by sonication for 60 minutes. It was. Thereafter, a mixed binder was added to the carbitol acetate solvent and then a master batch was prepared through mechanical stirring. Next, the dispersion A and the masterbatch were first kneaded through mechanical stirring, followed by a second kneading process through a 3-roll-mill process to prepare an exothermic paste composition.

For the comparative examples, CNT particles were added to the carbitol acetate solvent according to the composition of [Table 1], BYK dispersant was added, and a dispersion was prepared by sonication for 60 minutes. Thereafter, ethyl cellulose was added to the carbitol acetate solvent to prepare a master batch through mechanical stirring. Next, the dispersion B and the masterbatch were first kneaded through mechanical stirring, followed by a second kneading process through a 3-roll mill to prepare an exothermic paste composition.

(2) Evaluation of Planar Heating Element Characteristics

After heating and curing the exothermic paste compositions according to Examples and Comparative Examples on a polyimide substrate with a size of 10 × 10 cm, silver paste electrodes were printed and cured on both upper ends to prepare a planar heating element sample.

9 is an image of a planar heating element specimen prepared using the heating paste composition according to the present invention. Fig. 9A is a planar heating element formed by screen printing a heat generating paste composition on a polyimide substrate. Figure 9 (b) is a planar heating element formed by screen printing the heating paste composition on a glass fiber mat. 9 (c) and 9 (d) are images when a protective layer is coated on the planar heating element of FIG. 9 (a). FIG. 9 (c) is a black protective layer coating and FIG. 9 (d). Coated with a green protective layer).

Specific resistance of the planar heating element samples (Example) and planar heating element samples prepared according to the comparative example as shown in FIG. 9 (a) was measured. The voltage / current applied is shown in Table 2). In addition, in order to confirm the temperature increase effect according to the applied voltage / current, the planar heating element corresponding to the above Examples and Comparative Examples was heated up to 40 ° C., 100 ° C. and 200 ° C., respectively, and the DC voltage when the temperature was reached and The current was measured.

In addition, exothermic stability at 200 ° C. was tested for each sample. In this regard, Figure 10 shows the image of the heat stability test appearance of the planar heating element samples prepared according to the Examples and Comparative Examples, the test results are summarized in the following [Table 2].

	Example 1	Example 2	Example 3	Comparative Example 1	Comparative Example 2	Comparative Example 3
Specific resistance (× 10ˇ²Ωcm	1.9	2.55	2.96	9.73	8.52	6.23
40 ℃ reach DC drive voltage / current	5V / 0.2A	6V / 0.2A	7V / 0.2A	20V / 0.3A	16V / 0.2A	12V / 0.2A
100 ℃ reach DC driving voltage / current	9V / 0.5A	12V / 0.4A	14 V / 0.5 A	48V / 0.7A	40V / 0.7A	26V / 0.6A
200 ℃ reach DC drive voltage / current	20V / 0.6A	24V / 0.7A	24V / 1.0A	-	-	-
Heat stability (day)	20 days or more	20 days or more	20 days or more	Bad	Bad	Bad

Referring to the above [Table 2], the specific resistance was measured that the planar heating element corresponding to the embodiments is smaller than the planar heating element corresponding to the comparative examples, accordingly driving voltage / current required to reach each temperature is also embodiments The planar heating element corresponding to was smaller than the planar heating element corresponding to the comparative examples. That is, it was confirmed that the planar heating element corresponding to the embodiments can be driven at a lower voltage and lower power than the comparative example.

In addition, in the planar heating elements according to Examples 1 to 3, the stability was maintained for 20 days even under an exothermic driving at 200 ° C. (no separate protective layer), whereas in Comparative Examples 1 to 3, the exothermic driving at 200 ° C. was performed. Poor phenomena were observed to swell the surface of the heating portion within time. That is, it was confirmed that the planar heating element corresponding to the embodiments can be stably driven even at a high temperature of 200 ° C. or more than the comparative example.

The air purifier having the configuration as described above operates as follows.

When the air purifier is operated by the operation of the operation panel 14 provided on the upper part of the main body 10, the air is driven by the motor 53 and the blowing fan 52 through the inlet 12 of the main body 10. Flows into.

Fine dust particles contained in the air are collected by the operation of the steam plasma generating module 100 installed below the suction duct 20 of the cyclone, which is the dust collector 70.

The water of the steam plasma generating module 100 storage unit 110 is supplied to the housing 121 installed in the mounting unit 112 of the storage unit 110 through the outlet port 113. The dispersion 124 partially exposed outside the fixing part 126 of the housing 121 absorbs and diffuses water through cohesion, surface tension, or capillary action, and is configured as a heater having a planar heating element installed between the dispersions 124 ( 122) generates the steam by heating the absorbed water. By using a surface heating element, water can be heated quickly. Meanwhile, the heater 122 may directly heat the water flowing out of the storage 110 without the dispersion 124 to generate steam.

When steam is charged in the housing 121, when high pressure is applied to the electrodes 132 mounted on both sides of the cover 130 mounted at the upper opening of the housing 121, corona discharge is generated between the electrodes 132. The steam plasma is generated, and the steam plasma is introduced into the suction duct 20 through the outlet 131 of the cover 130. Since the steam plasma generating module 100 is installed below the suction duct 20, even without a separate supply mechanism, the steam plasma is introduced into the suction duct 20 by its own buoyancy. The steam plasma introduced into the suction duct 20 collects and collects the fine dust particles in the sucked air.

In the present invention, fine dust particles in the air are adhered by bipolar ions of the steam plasma to form a dust mass, and the dust mass flows into the cyclone, which is the dust collecting part 70 together with the relatively large dust particles. do. The dust mass and the large dust particles introduced into the cyclone are pivoted in the cyclone 72 by the centrifugal force generated by the blower fan 52 and are lowered to be collected on the inner wall of the cyclone 72 to collect the cyclone 72. Due to the inclination, it is accumulated in the dust collecting container 73 through the dust outlet 76. The dust mass or large dust particles accumulated in the dust collecting container 73 can be easily removed by emptying the dust collecting container.

Relatively medium dust particles or uncollected dust particles are sent to the HEPA filter, which is the filtration filter 80, through the cyclone discharge duct 75, which is the dust collecting part 70, and finally filtered, and then purified clean air. Only through the discharge port 13 is discharged.

In the above, embodiments of the present invention have been described. However, those skilled in the art to which the present invention pertains, within the scope of the technical spirit of the present invention described in the claims, simple design changes, omission of some components, simple use changes, etc. It will be apparent that the present invention may be variously modified in the form of the present invention, which is also included within the scope of the present invention.

Claims (8)

1. Inlet;

   A dust collecting unit for purifying the air flowing from the suction port; And

   And a steam plasma generating module for supplying steam to the air introduced from the suction port to the dust collecting unit.

   The steam plasma generating module

   Water storage unit;

   A heater composed of a surface heating element for heating water in the water storage part; And

   And an electrode for discharging steam generated by the heater.

   The planar heating element

   3 to 6 parts by weight of carbon nanotube particles, 0.5 to 30 parts by weight of carbon nanoparticles, 10 to 30 parts by weight of a mixed binder, 29 to 83 parts by weight of an organic solvent, and 0.5 to 5 parts by weight of a dispersant based on 100 parts by weight of the exothermic paste composition. Including,

   The mixed binder includes an exothermic paste composition in which epoxy acrylate, polyvinyl acetal and phenolic resin are mixed or hexamethylene diisocyanate, polyvinyl acetal and phenolic resin are mixed.
2. The method of claim 1,

   The mixed binder is 10 to 150 parts by weight of polyvinyl acetal resin, 100 to 500 parts by weight of phenolic resin based on 100 parts by weight of epoxy acrylate or hexamethylene diisocyanate.
3. The method according to claim 1 or 2,

   An air purifier further comprising 0.5 to 5 parts by weight of the silane coupling agent based on 100 parts by weight of the exothermic paste composition.
4. The method according to claim 1 or 2,

   The carbon nanotube particles are multi-walled carbon nanotube particles.
5. The method according to claim 1 or 2,

   The organic solvent is selected from carbitol acetate, butyl carbitol acetate, DBE (dibasic ester), ethyl carbitol, ethyl carbitol acetate, dipropylene glycol methyl ether, cellosolve acetate, butyl cellosolve acetate, butanol and octanol Air freshener that is two or more mixed solvents.
6. According to claim 1, wherein the planar heating element

   An air purifier formed by screen printing, gravure printing or comma coating the exothermic paste composition on a substrate.
7. The method of claim 6,

   The substrate is a polyimide substrate, glass fiber mat or ceramic glass.
8. The method of claim 6,

   The air purifier is coated on the top surface of the planar heating element, and further comprises a protective layer formed of an organic material having a black pigment such as silica or carbon shock.

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