JP2007190412A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase the amount of atomization, eliminate the phenomenon of hardly generating electrostatic atomization, efficiently diffusing the generated mist and efficiently deodorizing indoor air and matters stuck to an indoor wall face or the like. <P>SOLUTION: This air cleaner A has an air blowing part 4 which sucks air from a suction port 1, cleans it with a filter 2, and exhausts it from an exhaust port 3 and is provided with an electrostatic atomization device 9. The electrostatic atomization device 9 has a water sump part 5, a carrying part 6 carrying water of the water sump part 5 to the tip side positioned outside the water sump part 5, and a voltage application part 8 applying a high voltage for atomizing the water in the carrying part 6 and generating the mist. The carrying part 6 is provided in the downstream side of the filter 2 in an air duct 10 extending from the suction port 1 to the exhaust port 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air purifier capable of deodorizing indoor air and deodorizing deposits such as indoor wall surfaces, and more particularly to an air purifier using an electrostatic atomization technique.

  Many conventional air purifiers are provided with a filter for trapping dust or the like in the air and a filter such as activated carbon for adsorbing odor molecules. Moreover, what deodorizes using the technique of electrostatic atomization like patent document 1, patent document 2, etc. is also provided. Here, electrostatic atomization is a phenomenon in which water is atomized when a high voltage is applied to a liquid such as water and the liquid is exposed during electrolysis.

In the thing shown in the said patent document 1, after making the mist which generate | occur | produced in the electrostatic atomization part contact the air taken in in the air cleaner, the gas-liquid contact part is made to capture the dirty mist. Moreover, in what was shown by the said patent document 2, a liquid deodorizer is atomized in an electrostatic atomization part, mist is generated, and it sprays in air.
JP-A-53-141167 JP 2001-286546 A

  In the conventional example shown in Patent Document 1 above, dirty air always comes into contact with the electrostatic atomization unit, so that dust or dirt adheres to the electrostatic atomization unit, and a high voltage is applied. There was also a risk that electrostatic atomization would be difficult to occur. For this reason, it was necessary to frequently clean the electrostatic atomizer. Further, in this conventional example, only the air taken into the air cleaner is purified, and the deposits such as the indoor wall surface cannot be deodorized.

  On the other hand, in the conventional example shown in the above-mentioned Patent Document 2, it is only disclosed that the electrostatic atomizer is built in the air cleaner, and it is disclosed up to where it is specifically arranged. No, it is described that the mist generated in the electrostatic atomization unit is sprayed, but in the combination with the air cleaner, there is no description how to diffuse into the air, At present, it has not been put into practical use.

  The present invention has been made in view of these points, and can increase the amount of atomization and eliminate the phenomenon that electrostatic atomization is difficult to occur, and efficiently diffuse the generated mist into the room. It is an object of the present invention to provide an air cleaner that can effectively deodorize deposits such as indoor air and indoor wall surfaces.

  In order to solve the above problems, an air purifier according to the present invention includes a water reservoir in an air purifier A having a blower 4 that purifies air sucked from a suction port 1 with a filter 2 and discharges the air from the discharge port 3. 5, a transport unit 6 that transports the water in the water reservoir 5 to the tip side located outside the water reservoir 5, and a high voltage is applied to atomize the water in the transport unit 6 to generate mist. And an electrostatic atomizer 9 having a voltage applying unit 8 for the purpose, and a transport unit 6 is provided on the downstream side of the filter 2 in the air passage 10 from the suction port 1 to the discharge port 3. To do.

  With such a configuration, the mist generated by atomizing the water in the transport unit 6 by applying a high voltage by the voltage application unit 8 is outside the air cleaner A together with the air purified by the filter 2. It will be diffused into the atmosphere, and it can effectively deodorize indoor air and deodorize deposits such as indoor wall surface, especially electrostatic atomization in the air passage 10 through which purified air flows As a result, the amount of atomization increases, and even if the transport unit 6 is provided in the air passage 10, the transport unit 6 is exposed to the air purified by the filter 2. Therefore, there is no such thing as dust or dust adhering to the transport unit 6, and for this reason, the phenomenon that electrostatic atomization hardly occurs even when a high voltage is applied due to the dust or dust adhering is eliminated. Can do.

  As described above, in the present invention, the mist generated by atomizing the water in the transport section by applying a high voltage is diffused into the atmosphere outside the air cleaner together with the air purified by the filter. Therefore, it is possible to effectively deodorize indoor air and deodorize deposits such as indoor wall surfaces, and in particular, a transport section is provided downstream of the filter in the air passage from the suction port to the discharge port. Therefore, electrostatic atomization is performed in the air passage through which the purified air flows, and the amount of atomization increases, and even if the transport section is provided in the air path, the transport section Will be exposed to the air purified by the filter, and there will be no dust or dust adhering to the transport section. It is possible to eliminate such a phenomenon that it is difficult to occur.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 and 2 show an example of the air cleaner A of the present invention. The air purifier A has an air purifier 12 and an electrostatic atomizer 9 inside a main body case 11.

  The air purifier 12 has a suction port 1 for sucking room air, a discharge port 3 for discharging filtered air into the room, and a wind from the suction port 1 to the discharge port 3 as in the conventional air cleaner. A filter 2 such as a nonwoven fabric or activated carbon provided in the passage 10 and a blower 4 provided with a fan 4a are provided. The room air is sucked into the air purifier 12 from the suction port 1 and filtered by the filter 2. Then, the air is purified, and the cleaned air is discharged into the room again from the discharge port 3, and the odor floating in the room by the so-called filter 2 filtering method (filtering method) Is supposed to be removed.

  The main body case 11 is provided with the electrostatic atomizer 9 in addition to the air purifier 12 as described above. The electrostatic atomizer 9 includes water W as shown in the principle diagram shown in FIG. A water reservoir 5 containing water, a transport unit 6 for transporting water W from the water reservoir 5, an electrode 7 disposed so as to face the transport direction of the water W by the transport unit 6, the transport unit 6 and the electrode 7 and a voltage application unit 8 for applying a high voltage.

  Here, in the air cleaner A of the present invention, at least the transport unit 6 and the electrode 7 of the electrostatic atomizer 9 are provided on the downstream side of the filter 2. By applying a high voltage between the transport unit 6 and the electrode 7, the water W at the tip of the transport unit 6 is charged and atomized to generate nano-sized mist M. And since the conveyance part 6 and the electrode 7 are provided in the downstream of the filter 2 in this invention, the nanosize mist M which generate | occur | produced by applying a high voltage to the conveyance part 6 and the electrode 7 as mentioned above is It diffuses in the atmosphere outside the air purifier A together with the air purified by the filter 2, and it is possible to effectively deodorize indoor air and deposits such as indoor wall surfaces. In addition, when it is diffused in the atmosphere together with dirty air, the dirty air and mist immediately come into contact with each other. Therefore, the ratio of mist containing odorous molecules is increased, and the room air, the wall surface of the room, etc. Although the deodorizing effect of the deposit is reduced, in the present invention, the nano-sized mist M is diffused into the atmosphere together with the air purified by the filter 2 as described above. Does not reduce the deodorizing effect of the deposits.

  3 to 5 show an example of the electrostatic atomizer 9 provided in the air cleaner of the present invention. The electrostatic atomizer 9 is provided with a water tank 5a constituting the water reservoir 5 at the lower part, and is arranged in a cylindrical shape with a holder 14 having a vent hole 13 on the peripheral surface and an upper part of the holder 14. The electrode 7 (in the embodiment, since it is a counter electrode, hereinafter referred to as the counter electrode 7), an application electrode 15 that is fitted in the lower portion of the holder 14 and applies a voltage to the water W, and a transport held by the application electrode 15 The water tank 5a formed of a plurality of rod-shaped water absorbing bodies 6a constituting the portion 6 and an ionization needle 16 that is also held by the application electrode 15 is formed in a cup shape. The protrusion 35 on the outer surface is attached by engaging with the engaging recess 18 provided on the outer peripheral flange portion 17 of the application electrode 15 mounted on the lower portion of the holder 14 by bayonet engagement.

  Both the counter electrode 7 and the application electrode 15 have conductivity by being formed of a synthetic resin mixed with a conductive material such as carbon or a metal such as SUS, and are opposed to the upper portion of the holder 14. The electrode 7 is grounded through a grounding contact plate 20 that contacts the outer surface of the connecting projection 19 formed on the outer peripheral surface thereof. The application electrode 15 that is fitted and fixed in the lower part of the holder 14 and is fixed by pressing the rib 21 on the inner surface of the holder 14 also has a high voltage via the contact plate 22 that contacts the outer surface of the connecting projection 26 formed on the outer peripheral surface. Is connected to the voltage application unit 8 for applying.

  The rod-shaped water absorber 6a is formed of, for example, porous ceramic and has an upper end pointed like a needle, and a plurality of, in the illustrated example, six water absorbers 6a are attached to the application electrode 15. These water absorbing bodies 6a are arranged at equal intervals on the same circle centered on the ionization needle 16 disposed in the center of the application electrode 15, the upper part projects upward from the application electrode 15, and the lower part projects downward. It contacts the water W placed in the water tank 5a.

  In the figure, 23 is a cylindrical skirt projecting downward from the application electrode 15 and surrounds the outside of the plurality of water absorbent bodies 6a, and its lower end is located below the lower end of the water absorbent body 6a. The opening is covered with a lattice-like protective cover 24 in the form of a lattice. The skirt 23 in the application electrode 15 applies a high voltage to the water W by coming into contact with the water W put in the water tank 5a, and at the same time, the water absorbing body 6a formed of ceramic together with the lattice-shaped protective cover 24. Protection.

  Here, when the water tank 5a is connected, the application electrode 15 substantially seals the upper surface opening of the water tank 5a so that the water W in the water tank 5a does not leak even when tilted. For this reason, a slit 29 is provided in a part of the circumferential direction of the skirt 23 so as to cover the entire length of the skirt 23 in the vertical direction, and the skirt 23 is surrounded by the slit 29 when the water tank 5a containing water W is mounted. The air in the space is removed to allow the water W to flow into the skirt 23.

  The counter electrode 7 mounted so as to close the upper surface opening of the holder 14 has an opening 25 in the center as shown in FIG. 4, and the edge of the opening 25 when viewed from above is the plurality of water absorptions. A plurality of arcs R having the same diameter centered on the needle-like portion at the upper end of the body 6a are smoothly connected by other arcs r. When the counter electrode 7 is grounded and a high voltage generating source is connected to the application electrode 15 and the water absorption body 6a sucks up the water W by capillary action, the needle-like portion at the upper end of the water absorption body 6a is on the application electrode 15 side. While functioning as a substantial electrode, the arc R of the counter electrode 7 functions as a substantial electrode, and between the counter electrode 7 and the tip of the rod-shaped water absorbing body 6a constituting the transport unit 6 that transports the water W. A high voltage will be applied. The opening 25 is covered with a lattice-shaped protective cover 39, so that fingers and the like are prevented from coming into contact with the ionization needle 16 and the water absorbent body 6a through the opening 25.

  Now, the water tank 5a containing the water W is mounted, and the water W is brought into contact with the skirt 23 of the application electrode 15. At the same time, the water absorption body 6a sucks up the water W by capillary action and further grounds the counter electrode 7. In addition, when a high voltage generating source is connected to the application electrode 15 and a negative voltage is applied to the application electrode 15, a high voltage is applied between the tip of the rod-shaped water absorbent 6 a constituting the transport unit 6 and the counter electrode 7. The Rukoto. If this voltage is a high voltage that can cause the water W to undergo Rayleigh splitting, the water W that has reached the needle-like portion at the upper end of the water absorbing body 6a will cause Rayleigh splitting and mist M having a particle size of nanometer size. The electrostatic atomization which produces the atomization which becomes is made.

  In the electrostatic atomizer 9, a high negative voltage is simultaneously applied to the ionization needle 16, and negative ions are generated by corona discharge between the counter electrode and the ionization needle 16. At this time, if the distance between the electrodes is the same, the voltage required for electrostatic atomization is higher than the voltage required for generating negative ions, so here, from the needle-like portion at the upper end of the water absorbing body 6a. Electrostatic atomization is more likely to occur by making the distance l2 from the ionization needle 16 to the counter electrode 7 considerably longer than the distance L1 to the counter electrode 7. However, if the water W in the water tank 5a disappears and the water W held by the water absorber 6a is not atomized, only the generation of the negative ions is continued.

  In the present invention, as already described, the transport unit 6 and the electrode 7 of the electrostatic atomizer 9 are provided on the downstream side of the filter 2, but in the embodiment shown in FIGS. An electrostatic atomizing device 9 having a conveying section 6 and an electrode 7 having a configuration is provided in an air passage 10 extending from the suction port 1 to the discharge port 3. That is, the blower unit 4 includes a fan 4a and a wind tunnel 4c that are driven by a motor 4b, and after the indoor air sucked from the blower unit 4 is filtered by the filter 2 by driving the fan 4a, the cleaned air is discharged. The air is discharged again from the outlet 3 into the room. Of the air passage 10 in the air cleaner A, the electrostatic atomizer 9 is disposed in the wind tunnel 4c of the air blowing unit 4 and in the vicinity of the discharge port. It is.

  Nanometer mist, which is a mist of nanometer size particle size generated by electrostatic atomization, is originally highly diffusible, but it is more diffusible because the purified air spreads on the air flow blown by the blower In addition, because it spreads on the flow of purified air, nano-sized mist does not immediately come into contact with dirty air, but diffuses on purified air far away. It is possible to deodorize over a wide range by effectively utilizing the deodorizing function for the odor components in the indoor air and the deposits on the indoor wall surface due to the active species possessed by the size mist. In particular, in the embodiment shown in FIGS. 1 and 2, when the electrostatic atomizer 9 is disposed in the housing recess 27 provided in a part of the wind tunnel 4 c, the contact plates 20 and 22 and the connection protrusion 19 are provided. , 26 through the opening 28 opened in the wall surface of the storage recess 27 and the vent hole 13 in the holder 14 of the electrostatic atomizer 9 so as to be partly inside the electrostatic atomizer 9. As the wind flows in, the atomization is promoted to increase the amount of atomization, and the mist M is easily scattered on the wind.

  Moreover, although the electrostatic atomizer 9 is arranged in the wind tunnel 4c, the air passing through the vicinity of the electrostatic atomizer 9 is clean air filtered by the filter 2, and for this reason, the electrostatic atomization is performed. Although the apparatus 9 is not soiled and a part of the wind enters the electrostatic atomizer 9 as described above, the electrostatic atomization hardly occurs due to the dirt.

  In the air cleaner A of the present invention, the air cleaning unit 12 and the electrostatic atomizer 9 may be operated simultaneously, and the operation of the electrostatic atomizer 9 is stopped and only the air cleaner 12 is operated. Or, the operation of the air cleaning unit 12 can be stopped and only the electrostatic atomizer 9 can be operated, and the mode of operation can be arbitrarily selected.

  By the way, although the said embodiment demonstrated the example which formed the conveyance part 6 which has the water absorption which conveys water with the porous ceramic, you may form the conveyance part 6 which conveys water from the water reservoir part 5 with a felt. Is. Thus, if the conveyance part 6 is formed with felt, the conveyance part 6 can be formed at a low cost, and nano-sized mist M containing active species can be atomized and sent out indoors at a low price, which adheres to an indoor wall surface or the like. It is possible to remove the odor. And also when the conveyance part 6 is comprised with a felt, it is made to sharpen the front-end | tip part which opposes the electrode 7 of a felt. By sharpening the tip of the felt facing the electrode 7 in this way, when a high voltage is applied between the transport unit 6 and the electrode 7 by the voltage application unit 8, the electric field concentrates on the pointed tip of the felt. The nano-sized mist M containing a large amount of active species can be efficiently atomized. Thus, the nano-sized mist M containing a large amount of active species can be efficiently atomized and delivered to the room. It is possible to remove the odor adhering to the indoor wall surface.

  In the case where the transport unit 6 is formed of felt as described above, it is preferable to use a felt having weak hydrophilicity. When a felt having a weak hydrophilic property is used, when the high voltage is applied between the conveying unit 6 and the electrode 7 by the voltage applying unit 8 and the water at the tip of the conveying unit 6 is atomized by the high voltage, the felt is used. The water W can be easily separated from the water, and the nano-sized mist M containing a large amount of active species can be atomized efficiently, and the odor adhering to the indoor wall or the like can be efficiently removed by sending it to the room. It is something that can be done.

  Moreover, in the thing which forms the conveyance part 6 with a felt, the felt to be used may be what the desurfactant process was carried out. Also in this case, when a high voltage is applied between the conveyance unit 6 and the electrode 7 by the voltage application unit 8 and the water W at the tip of the conveyance unit 6 is atomized by the high voltage, the water W is easily separated from the felt. In addition, the nano-sized mist M containing a large amount of active species can be atomized efficiently, and the odor adhering to the indoor wall or the like can be efficiently removed by sending it to the room.

  Further, it is preferable to use a felt having a high porosity. For example, a porosity of about 75% is preferable because the amount of water W transported is large. For example, a porosity of about 50% or less is not preferable because the amount of water transported is small. As described above, when the felt having a high porosity is used, the amount of water transported is increased, and the nano-sized mist M containing a large amount of active species can be efficiently atomized and delivered to the room. By doing so, the odor adhering to the indoor wall or the like can be efficiently removed.

  Moreover, it is preferable to use a felt having a large fiber diameter as the felt to be used. For example, a fiber diameter of about 20d is preferable because the amount of water W transported is large. For example, a fiber diameter of about 3d or less is not preferable because the amount of water W transported is small. As described above, when a felt having a thick fiber diameter is used, the transport amount of water W is increased as described above, and nano-sized mist M containing a large amount of active species can be efficiently atomized. By sending it out indoors, it is possible to efficiently remove odors adhering to the indoor walls and the like.

  In the present invention, a pressurizing means (not shown) for pressurizing the water W of the water reservoir 5 may be provided. As a pressurizing means for pressurizing the water W in the water reservoir 5, for example, a pump can be adopted. By providing a pressurizing means for pressurizing the water W of the water reservoir 5 in this way, the transport amount of the water W increases, and the nano-sized mist M containing a large amount of active species can be atomized efficiently. Thus, the odor adhering to the indoor wall or the like can be efficiently removed by sending it out indoors.

  In the present invention, a heating means (not shown) for heating the water W of the water reservoir 5 may be provided. For example, a heater can be employed as the heating means 32. In this embodiment, the nano-sized mist M containing a large amount of active species can be efficiently atomized, and the odor attached to the indoor wall or the like can be efficiently removed by sending it to the room. It can be done.

  In the present invention, vibration means (not shown) for applying vibration to the water W of the water reservoir 5 may be provided. For example, an ultrasonic element can be employed as the vibration means for applying vibration to the water in the water reservoir 5. In this embodiment, the transport amount of water W is increased, and nano-sized mist M containing a large amount of active species can be efficiently atomized and attached to indoor walls or the like by sending it into the room. The odor can be efficiently removed.

  In the present invention, vibration means (not shown) for applying vibration to the transport unit 6 may be provided. A piezo element can be employed as the vibration means for applying vibration to the transport unit 6. In this embodiment, the transport amount of the water W is increased, and the nano-sized mist M containing a large amount of active species can be efficiently atomized, and is attached to the indoor wall or the like by sending it into the room. The odor can be efficiently removed.

  Next, the embodiment shown in FIG. 7 will be described. Since the basic configuration of this embodiment is the same as that of each of the above-described embodiments, different points will be described. As described above, in the present invention, a negative voltage is applied to the application electrode 15 of the electrostatic atomizer 9. In this embodiment, a negative voltage is applied to the application electrode 15 as described above. The characteristics of the high voltage applied between the transport unit 6 and the electrode 7 are set to be negative direct current. In this embodiment, the transport amount of the water W is increased, and the nano-sized mist M containing a large amount of active species can be efficiently atomized, and is attached to the indoor wall or the like by sending it into the room. The odor can be efficiently removed. Also, negative ions can be generated at the same time, and can be supplied indoors.

  Next, the embodiment shown in FIG. 8 will be described. Since the basic configuration of this embodiment is the same as that of each of the above-described embodiments, different points will be described. In the present embodiment, the characteristics of the high voltage applied between the transport unit 6 and the electrode 7 are set to be a negative DC rectangular wave of 20 to 100 kHz. In this embodiment, the transport amount of water W is increased, and nano-sized mist M containing a large amount of active species can be efficiently atomized and delivered to the indoor wall by sending it to the room. The odor can be efficiently removed. Also, negative ions can be generated simultaneously and effectively, and can be supplied indoors.

  Moreover, in each above-mentioned embodiment, the discharge port 3 is provided in the upper surface of the main body case 11 of the air cleaner A, and the nanosized mist M generated by the electrostatic atomizer 9 together with the air purified by the filter 2 is used. Although it sends out indoors, you may provide the discharge port 3 in the front surface of the main body case 11 of the air cleaner A. FIG. Thereby, the delivery direction of the atomized mist M becomes the front direction of the air purifier A, and the nano-sized mist M containing active species is efficiently diffused and sent into the room to efficiently remove the odor adhering to the indoor wall surface. Can be removed.

It is side surface sectional drawing of the air cleaner of this invention. It is front sectional drawing same as the above. It is sectional drawing of the electrostatic atomizer provided in an air cleaner same as the above. It is a top view same as the above. It is sectional drawing same as the above. It is a principle figure explaining the principle which generates nanosize mist by electrostatic atomization same as the above. It is explanatory drawing of the example whose specification of the high voltage applied between the conveyance part and electrode of other embodiment same as the above is negative direct current. It is explanatory drawing of the example whose specification of the high voltage applied between the conveyance part and electrode of further another embodiment same as the above is a negative DC rectangular wave of 20-100 kHz.

Explanation of symbols

A Air Purifier 1 Suction Port 2 Filter 3 Discharge Port 4 Blower Unit 5 Water Reservoir Unit 6 Transport Unit 8 Voltage Application Unit 9 Electrostatic Atomizer 10 Air Path

Claims (1)

Air purifier with a blower that purifies the air sucked from the suction port with a filter and discharges it from the discharge port. The water reservoir and the water in the water reservoir are transported to the tip side located outside the water reservoir. Air passage from the suction port to the discharge port, provided with an electrostatic atomizer having a transport unit for carrying out and a voltage application unit for applying a high voltage to atomize the water in the transport unit to generate mist An air cleaner characterized by comprising a transport section on the downstream side of the inner filter.

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