JP2653353B2 - Electrostatic air purifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic air cleaning apparatus provided with an electrode for ionizing particles such as dust and an electrode for adsorbing the ionized particles.

[0002]

2. Description of the Related Art As an electrostatic air cleaning device, as shown in FIG. 7, a linear cathode 1 for ionizing particles such as dust and a plate-like anode 2 for adsorbing the ionized particles are shown.
And a dust collecting paper 3 is attached so as to cover the anode 2, and dust is attached to the dust collecting paper 3.

[0003] Further, as shown in FIG.
There is also known an apparatus in which a cathode 1 is arranged at the center of a circle, an anode 2 is annularly provided on the outer peripheral surface of a cylinder or a columnar body 4, and a dust collecting paper 3 is stuck on the anode 2 in an annular manner.

[0004] In any of the electrostatic air cleaning devices,
When a high voltage is applied between the cathode 1 and the anode 2, the discharge in the vicinity of the cathode 1 generates negative ions, which collide with dust, and the dust becomes negatively charged and is attracted to the anode.

[0005]

By the way, there is a demand for a small electrostatic air purifying device to be installed mainly in a room to have improved dust collecting performance, smaller size, and improved usability.

Accordingly, an object of the present invention is to provide an electrostatic air cleaning device capable of improving dust collection performance, miniaturizing the device, and improving usability.

[0007]

The present invention for achieving the above object will be described with reference to the accompanying drawings, which show an embodiment. A pedestal-shaped support portion 13a and a central portion of an upper surface of the support portion 13a are provided. A dust collecting paper mounting body 15 projecting upward from the region in a columnar shape; an ionization electrode 10 disposed on the upper surface of the support portion 13a so as to surround the dust collecting paper mounting body 15; A band-shaped dust collecting electrode 11 disposed substantially annularly on the surface and disposed above the ionization electrode 10, and substantially annularly covers the outer peripheral surfaces of the dust collecting electrode 11 and the dust collecting paper mounting body 15. And a dust-collecting paper holding means 21 for holding the dust-collecting paper 17 as described above.

[0008]

The present invention has the following functions and effects. (A) Column-shaped dust collecting paper mounting body 15 with dust collecting electrode 11
Since the ionization electrode 10 is disposed so as to surround the device, dust can be sucked from a direction of 360 degrees, and a device having a high dust collection capability despite its small size can be provided. (B) Since the dust collection electrode 11 is provided on the outer peripheral surface of the columnar dust collection paper mounting body 15 and is disposed above the ionization electrode 10, ions generated between the ionization electrode 10 and the dust collection electrode 11 are formed. The wind can be satisfactorily flowed from below to above along the outer peripheral surface of the columnar dust collecting paper mounting body 15,
Dust collection performance can be improved. (C) Dust collecting paper 17 is provided on the outer peripheral surface of the columnar dust collecting paper mounting body 15.
Is attached, the dust collecting paper 17 can be easily attached and detached, and an easy-to-use device can be provided.

[0009]

First Embodiment Next, an electrostatic air purifying apparatus according to a first embodiment of the present invention will be described with reference to FIGS.
This electrostatic air cleaning device has a large number of ionized electrodes (cathodes) in the form of needles or projections so that corona discharge easily occurs.
And a first and second substantially dust-collecting electrodes 11 and 12. A large number of ionization electrodes 10 are held by a column-shaped pedestal-shaped support portion 13a, are disposed on the circumference of the upper surface at substantially constant intervals, and protrude upward. The first and second dust collecting electrodes 11 and 12 are attached on an outer peripheral surface 16 of a columnar dust collecting paper mounting body 15 which can also be called a dust collecting paper container made of an insulator. FIG.
As seen from the plan view, the supporting portion 13a is formed to have a larger diameter than the central column-shaped dust collecting paper mounting member 15 and is arranged so as to concentrically surround the dust collecting paper mounting member 15. That is, the dust collecting paper mounting body 15 projects vertically from the center of the upper surface of the pedestal-shaped support portion 13a. Also, the support portion 13a
A large number of ionization electrodes 10 projecting from the upper surface of the filter are also arranged in a ring shape so as to surround the dust collecting paper mounting body 15 and the dust collecting electrodes 11 and 12 in plan view. The first and second dust collecting electrodes 11 and 12 arranged in a substantially annular shape on the dust collecting paper mounting body 15 are located above the ionization electrode 10.

The dust collecting paper mounting body 15 has a space 18 for accommodating a roll-shaped portion 17a of a belt-shaped dust collecting paper 17 made of paper having substantially the same electrical insulation as a so-called paper towel. Roll-shaped part 1 of dust collecting paper 17
7a is wound around a winding frame 17b, and a pin 19 implanted in the mounting body 15 is inserted into the winding frame 17b. The dust-collecting paper 17 is pulled out from a drawer portion 20 provided on the mounting body 15 and is arranged so as to extend from one end side to the other end side of the outer peripheral surface 16 on which the first and second dust-collecting electrodes 11 and 12 are provided. The end is fixed to the mounting body 15 by a U-shaped holder, that is, dust collecting paper holding means 21. In addition, perforations (not shown) extending in a direction orthogonal to the longitudinal direction of the dust collecting paper 17 are provided corresponding to a single use amount. As shown by a chain line in FIG.
Covered with. It is desirable to provide a large number of slits for forming an air passage in the cover 23.

As shown in FIG. 3, a number of ionizing electrodes 1
For example, -7 kV is applied to each of the zeros, the first dust collecting electrode 11 is grounded, and the second dust collecting electrode 12 is applied with, for example, +7 kV. In addition, the ionization electrode 10 and the first
The distance L1 between the first dust collection electrode 11 and the distance L2 between the first dust collection electrode 11 and the second dust collection electrode 12 is determined by the ionization electrode 10
And the distance L3 between the first and second dust collecting electrodes 12 are set to be smaller. That is, the first dust collection electrode 11 is disposed between the ionization electrode 10 and the second dust collection electrode 12.

As shown in FIG. 3, each of the electrodes 10, 11, 12
Is set, the first and second dust collecting electrodes 1 arranged substantially annularly from the ionized electrode 10 arranged annularly along the circumferential direction of the support portion 13a to the columnar dust collecting paper mounting body 15.
Lines of electric force directed toward the first and second dust collecting electrodes 11 and 12 are generated while lines of electric force directed toward the first and second dust collecting electrodes 11 and 12 are generated. As a result, ion wind is generated in the direction shown by the arrow 22. Since the ionization electrode 10 has a linear shape, discharge is started relatively easily by a high voltage. When dust comes into contact with gas ions or electrons generated by the discharge, the dust is negatively charged. Negatively charged dust (ionized dust) has first and second dust collecting electrodes 11 and 1 having a higher potential than the ionized electrode 10.
Move towards 2. First and second dust collecting electrodes 11,
Since 12 is covered with the dust collecting paper 17, the dust is not directly adsorbed to the first and second dust collecting electrodes 11 and 12 but is adsorbed to the dust collecting paper 17. Although the first dust collection electrode 11 is located closer to the ionization electrode 10 than the second dust collection electrode 12, the potential difference between the first dust collection electrode 11 and the ionization electrode 10 is the second dust collection electrode. Since the potential difference is smaller than the potential difference between the electrode 12 and the ionization electrode 10, all of the dust is not adsorbed to the first dust collection electrode 11 but is divided and adsorbed to the first and second dust collection electrodes 11 and 12. . Further, since the second dust collecting electrode 12 is located on the downstream side of the ion wind indicated by the arrow 22, the dust that could not be adsorbed by the first dust collecting electrode 11 is adsorbed by the second dust collecting electrode 12. Action.

When the amount of dust adhering to the dust-collecting paper 17 increases and the dust-collecting function deteriorates, the locking of the dust-collecting paper 17 by the holder 21 is released, and a new portion of the dust-collecting paper 17 is rotated while rotating the roll-shaped portion 17a. The drawer is pulled out, the used part is cut off, and the new part is covered on the surface 16 of the container 15 and locked by the holding means 21.

The electrostatic air purifying apparatus of this embodiment has the following effects in addition to the effects (a), (b), and (c) described in the description of the function and effect of the present invention. (1) Since the configuration is such that the dust collecting paper for replenishment is stored in the mounting body 15, it is not necessary to store the dust collecting paper in another place, and the loss and damage can be prevented. (2) The mounting body 15 is used not only for storing dust collection paper for replenishment, but also for arranging the dust collection electrodes 11 and 12 and as a winding surface of the dust collection paper. There is no. (3) Since roll paper is used as the dust-collecting paper 17, it is possible to extremely easily achieve the arrangement with respect to the dust-collecting place. (4) Since the dust-collecting paper 17 is not stuck with an adhesive, a peeling operation is not required when a used portion of the dust-collecting paper 17 is cut off. Therefore, the dust adsorbed on the dust collecting paper 17 does not scatter. (5) Since the dust collecting paper 17 has perforations at regular intervals, it is possible to easily cut off the used portion. (6) When the usage period of the dust collecting paper 17 is the same as that in the related art, the uneven distribution of dust adsorption is reduced, so that stable dust collection with little change over time can be performed. In addition, ozone O
_3. The amount of generation is reduced. (7) Since the second dust collecting electrode 12 set to a higher potential than the first dust collecting electrode 11 is on the downstream side of the ion wind 22, dust that cannot be adsorbed by the first dust collecting electrode 11 is removed. The second dust collecting electrode 12 can effectively adsorb the dust.

[0015]

Second Embodiment A dust collecting paper mounting body 15 according to a second embodiment shown in FIGS. 4 and 5 is provided with a pin 24 for winding up a dust collecting paper 17 in parallel with a supply side pin 19. A take-up reel 25 is rotatably mounted on the take-up side pin 24, and one end of the dust collecting paper 17 is locked to the reel 25. That is, the dust-collecting paper 17 is wound around a pair of winding frames 17b and 25 like a cassette tape for magnetic recording and reproduction. The first and second dust collecting electrodes 11 with respect to the elliptical mounting body 15,
The method for forming 12 and the method for forming the ionization electrode 10 are substantially the same as those in the first embodiment. Note that a separation wall 26 is provided between one pin 19 and the other pin 24.

When using this electrostatic air cleaning device, a pair of pins 19 and 24 are attached to a bobbin 17 as shown in FIG.
b and 25 are rotatably mounted, the dust collecting paper 17 is pulled out from the drawer 20, wound around the outer surface 16 of the mounting body 15, and returned to the inside space 18 of the mounting body 15 using the drawer 20. Different voltages are applied to the first and second dust collecting electrodes 11 and 12 and the ionization electrode 10 as in the first embodiment. When the dust-collecting paper 17 pulled out becomes dirty, the supply-side bobbin 17b and the take-up-side bobbin 25 are rotated together in a clockwise direction to wind a new portion around the mounting body 15, and the dust-collecting paper 17 is contaminated. The wound portion is wound around a winding frame 25 on the winding side.

This embodiment has the same operation and effect as the first embodiment, and also has the effect that the used portion of the dust collecting paper 17 can be easily disposed of.

[0018]

[Modifications] The present invention is not limited to the above-described embodiment, and for example, the following modifications are possible. (1) As shown in FIG. 6, the dust collecting paper 17 may be folded, and the dust collecting paper 17 may be supplied onto the dust collecting electrode while loosening the folding. (2) Three or more dust collecting electrodes may be provided, and different voltages may be applied to the respective electrodes. (3) A blower may be added to generate a flow of air from the ionization electrode 10 to the dust collection electrodes 11 and 12. Further, an air cleaning filter may be used in combination. (4) In the embodiment, general paper made of vegetable fiber is used as the dust collecting paper 17, but paper made of synthetic fiber or various sheet-like objects to which dust can be attached may be used instead. Can be. (5) Instead of using the roll-shaped dust collecting paper 17, FIG.
Alternatively, as in the case of FIG. 8, one sheet of dust paper may be arranged on the first and second dust collecting electrodes 11 and 12. (6) An appropriate voltage different from that of the second dust collection electrode 12 may be applied without grounding the first dust collection electrode 11.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an electrostatic air purifying apparatus according to a first embodiment.

FIG. 2 is a front view of the air cleaning device of FIG.

FIG. 3 is a diagram showing a potential relationship of each electrode of the air cleaning device of FIG. 1;

FIG. 4 is a plan view showing an electrostatic air purifying apparatus according to a second embodiment.

FIG. 5 is a front view showing the air cleaning device of FIG. 4;

FIG. 6 is a view showing another form of the dust collecting paper.

FIG. 7 is a sectional view showing a conventional air cleaning device.

FIG. 8 is a front view showing another conventional air cleaning device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Ionization electrode 11 1st dust collection electrode 12 2nd dust collection electrode 15 Dust collection paper mounting body 17 Dust collection paper

Claims (1)

(57) [Claims] A pedestal-shaped support portion, a dust-collecting paper mounting member protruding upward from a central region of an upper surface of the supporting portion, and a dust-collecting paper mounting member. ) So as to surround the support portion (1).
Ionization electrode (10) arranged on the upper surface of 3a)
A band-shaped dust collecting electrode (11) disposed substantially annularly on the outer peripheral surface of the dust collecting paper mounting body (15) and disposed above the ionization electrode (10); (11) and dust collecting paper holding means (21) for holding the dust collecting paper (17) so as to cover the outer peripheral surface of the dust collecting paper mounting body (15) in a substantially annular shape. Electric air purifier.