JP2511121Y2 - Electrostatic air purifier - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic air purifier, and more particularly to an electrostatic air purifier configured to adsorb dust in the air onto dust collecting paper by utilizing ionic wind.

[0002]

2. Description of the Related Art As a conventional electrostatic air cleaning device, there is, for example, a device proposed by the present applicant in Japanese Utility Model Laid-Open No. 2-100159 (see FIG. 5 of the publication).

This electrostatic air purifying apparatus is provided with an ionization electrode (cathode) for ionizing dust particles floating in the air and a dust collecting electrode (anode) for adsorbing ionized particles, A dust collecting paper is interposed between both electrodes so as to cover the surface of the dust collecting electrode, and the ionized dust is adhered to the surface of the dust collecting paper. When potentials are set on both electrodes, lines of electric force are generated from the ionization electrode toward the dust collecting electrode, which causes an ionic wind flowing between the electrodes. Due to this ionic wind, ambient air flows into the device, passes through the surface of the dust collecting paper, and flows out to the outside. When dust in the air flowing into the device comes into contact with gas ions and electrons generated by discharge, it is negatively charged, moves toward the dust collecting electrode side, and adheres to the dust collecting paper.

The dust collecting paper is wound in a roll shape and is housed in a cylindrical roll housing portion. A dust collecting electrode is formed on the outer circumference of the roll housing portion, and the dust collecting paper pulled out from the paper outlet of the roll housing portion is wound around the dust collecting electrode. In addition, since the dust collecting paper wound in a roll is provided with perforations at intervals of one revolution of the roll storage portion, when the dust collecting paper is soiled and replaced, the used part should be perforated. It can be easily cut using
Pull out new dust collecting paper from the paper outlet of the roll storage. Further, the roll storage part is locked to the roll storage part by a stopper.

[0005]

[Problems to be Solved by the Invention]
It is necessary to prepare a roll-shaped dust collecting paper with perforations, and it is necessary to manufacture a dedicated dust collecting paper roll having perforations at intervals according to the outer peripheral dimension of the roll housing.

Further, when a dust collecting paper roll without perforations is used, the used dust collecting paper is torn off by hand or a blade such as a scissors is used to cut the dust collecting paper. Met. Furthermore, since a metal fitting for locking the newly drawn dust collecting paper to the outer circumference of the roll storage part is provided separately from the roll storing part, not only is the work of locking the dust collecting paper by the stop fitting troublesome, May be lost, and in that case, the dust-collecting paper cannot be locked on the outer periphery of the roll storage portion, and there is a risk that it cannot be used.

Therefore, an object of the present invention is to provide an electrostatic air purifying device that solves the above problems.

[0008]

According to the present invention, the dust collecting paper drawn out from the paper outlet of the roll accommodating portion is wound around the dust collecting electrode on the outer periphery of the roll accommodating portion, so that the dust collecting paper between the ionizing electrode and the dust collecting electrode is provided. In an electrostatic air purifying device that attracts dust in the air to the dust collecting paper by electric discharge, a cutter for cutting the dust collecting paper pulled out from the paper outlet is provided on the outer periphery of the roll storage part, and the dust is drawn from the paper outlet. A pressing member is provided for pressing the cutter against the outer circumference of the roll accommodating portion so as to hold the end of the dust collecting paper that is pulled out and wound around the outer circumference of the roll accommodating portion.

[0009]

The dust collecting paper can be easily cut, probably because the cutter is provided on the outer circumference of the roll accommodating section, and the dust collecting paper roll without perforations can be used. Further, since the cutter can also be used as a paper retainer, the end of the newly drawn dust collecting paper can be easily locked.

[0010]

1 to 4 show an embodiment of an electrostatic air purifying device according to the present invention.

In each of the drawings, the electrostatic air purifying device is provided with a dust collecting unit 2 on the upper part of the main body 1 of the device.
A cup-shaped cover 3 that covers the periphery of is attached to the upper portion of the main body 1.

A fan 6 for blowing air is provided between the bottom portion 4 of the main body 1 and the base 5 on which the dust collecting unit 2 is placed. The fan 6 is provided so as to be located in the flow path 22 between the lower end of the cover 3 and the bottom portion 4 through which the air from the ventilation hole 5a of the base 5 flows, and the impeller 6b having a plurality of blades 6a and the main body 1 are provided. It is composed of a motor 6c (indicated by a broken line in FIG. 1) which is provided inside and rotationally drives the impeller 6b.

A power switch 7, a fan start switch 8 for the fan 6, a timer 9, and a power lamp 10 are provided on the front surface 1a of the main body 1. The fan start switch 8 is a slide switch, and can be switched to each mode of off, weak wind, and strong wind.

The cover 3 has a cup-shaped outer periphery on which lattice-shaped ribs 3a extending in the vertical direction and air inflow slits 3b formed between the ribs 3a are alternately formed at a constant pitch. Further, a locking mechanism 12 for locking the cover 3 to the main body 1 by holding the upper end of a shaft 11 standing upright in the center of the main body 1 is provided on the upper portion 3c of the cover 3.

A band-shaped ionization electrode (cathode) 13 is attached to the inner wall 3d of the cover 3 over the entire circumference. This ionization electrode 13 is designed to easily generate corona discharge.
It has a large number of linear protrusions 13a protruding obliquely upward and downward.

Further, the ionization electrode 13 is connected to a male connector 14 protruding from the lower end of the cover 3 as shown in FIG.

The dust collecting unit 2 has a substantially cylindrical roll storage portion 15 standing upright on the base 5, and the roll storage portion 15.
Mesh-shaped dust collecting electrode (anode) 16 wrapped around the outer periphery of the
And the dust collecting paper roll 17 stored in the roll storing portion 15.
The dust collecting paper 18 is drawn out and wound around the outer circumference of the dust collecting electrode 16. The roll accommodating portion 15 has a plurality of ventilation holes 15a on the outer periphery thereof, and as shown in FIG. 5, the roll accommodating portion 15 is formed with a paper outlet 23 for extracting the dust collecting paper 18 to the outside.

The dust collecting electrode 16 is provided in the roll housing portion 15
It is formed on the entire circumference of the dust collecting paper 18 excluding the paper draw-out port 23. The paper outlet 23 is composed of an elongated slit 23a extending in the vertical direction and an arcuate recess 23b cut out in the center of the slit 23a in the paper outlet direction. When pulling out the dust collecting paper 18, it is possible to easily pull out by inserting a fingertip into the concave portion 23b.

A fitting portion 15b, into which the core 17a of the roll 17 is fitted, projects from the bottom of the roll accommodating portion 15.

Numeral 19 is a disc-shaped roll retainer, which has a shaft 1 at the center.
1 has a central hole 19a through which the storage portion 15 is provided on the outer periphery.
A seal member 20 that seals between the inner wall 15c and the inner wall 15c is fitted. Therefore, the roll retainer 19 contacts the upper surface of the roll 17 and holds the roll 17 so as not to move up and down, and prevents the dust-free air in the upper portion of the storage portion 15 from being sucked by the activation of the fan 6. .

A cutter 24 is made of, for example, a synthetic resin and is rotatably provided on the outer periphery of the roll accommodating portion 15 so as to cover the paper outlet 23. This cutter 2
4 is formed in a U shape when viewed from above, and has a support portion 24b having an upper end and a shaft 24a on the lower surface, and an acute-angled paper pressing portion 24c that abuts the dust collecting paper 18 at the other end. A connecting portion 24d connecting both ends of the cutter 24 extends so as to laterally bridge the outside separated by the roll accommodating portion 15.

As shown in FIGS. 6 to 9, the shaft 24a of the cutter 24 is fitted and supported by a pair of bearing portions 25 projecting to the outer periphery of the roll accommodating portion 15. The pair of bearings 2
5 is smaller than the outer diameter of the shaft 24a, and the shaft 24a
An arcuate recess 25a corresponding to the outer periphery of the is formed. Therefore, the shaft 24a of the cutter 24 is provided with the pair of bearing portions 25.
While being fitted into the arcuate concave portion 25a, it is nipped from both sides and rotatably held. Further, a quadrangular contact portion 24e projects from the support portion 24b near the shaft 24a.

The cutter 24 is pressed against the roll accommodating portion 15 by a pair of leaf spring-like pressing parts 26 extending from the roll accommodating portion 15. Further, the pressing portion 26 is made of an elastic synthetic resin, and its tip portion abuts against the lower surface of the abutting portion 24e of the cutter 24 and presses it. Is pressed and held in the A direction so as to abut.

Here, the replacement work of the dust collecting paper 18 will be described.

The used dust collecting paper 18 wrapped around the outer circumference of the roll accommodating portion 15 is cut along the paper pressing portion 24c of the cutter 24.

When the unused dust collecting paper 18 is pulled out from the dust collecting paper roll 17, the paper pressing portion 24c of the cutter 24 is used.
The cutter 24 is rotated so that the cutter 24 is displaced in the direction B away from the roll storage portion 15, and in that state, the dust collecting paper roll 17
Pull out from the dust collection paper outlet 23 from.

In this way, the dust-collecting paper 18 drawn out from the paper-drawing port 23 is wrapped around the entire circumference of the roll accommodating section 15 as shown in FIG.
Is folded back in the opposite direction and the paper pressing portion 24c of the cutter 24 is
And the outer circumference of the roll storage portion 15 are sandwiched.

As described above, the cutter 24 cuts the used dust collecting paper 18 and also functions as a paper pressing member for locking the end portion 18a of the unused dust collecting paper 18.

Therefore, it is not necessary to perforate the dust collecting paper 18 and inexpensive commercially available roll paper (for example, toilet paper) can be used, and the used dust collecting paper 18 can be easily used without scissors. It can be cut to a predetermined length. Further, since the end portion 18a of the dust collecting paper 18 is locked by the cutter 24 provided in the roll storage portion 15, a separate stopper fitting as in the prior art is not required and can be locked easily and there is no fear of loss. .

The periphery of the dust collecting unit 2 having the above structure is covered with the cover 3. When the cover 3 is attached to the main body 1, the male connector 14 projecting from the lower end of the cover 3 is attached to the female connector 2 provided on the support portion 1b at the rear of the main body 1.
1 (shown by the broken line in FIG. 3)
The locking mechanism 12 locks the shaft 11.

Here, when the power switch 7 is turned on, for example, -7 kv is applied to the ionization electrode 13,
+7 kv is applied to the mesh-shaped dust collecting electrode 16. As a result, a line of electric force is generated from the ionization electrode 13 toward the dust collecting electrode 16. At that time, since the dust collecting electrode 16 is formed around the entire circumference of the roll accommodating portion 15 having a cylindrical shape, the lines of electric force from the ionization electrode 13 are generated toward the entire outer circumference of the roll accommodating portion 15. Therefore, the dust collection efficiency is higher than before.

When the lines of electric force are generated between the ionization electrode 13 and the dust collecting electrode 16 as described above, ion wind as shown by the arrow in FIG. 1 is generated. Therefore, the air around the cover 3 passes through the slit 3b and flows into the inside of the cover 3, and further passes through the dust-collecting paper 18 wound around the outer periphery of the dust-collecting electrode 16 and the slit 15a of the roll accommodating portion 15 and rolls. It flows into the storage section 15.

That is, since the ionization electrode 13 has a plurality of linear projections 13a, the discharge is easily started by a high voltage, and when the gas ions or electrons generated by the discharge come into contact with dust, the dust is negatively charged. The negatively charged dust (ionized dust) moves toward the dust collecting electrode 16 having a higher potential than the ionizing electrode 13. Since dust collecting paper 18 is wrapped around the dust collecting electrode 16, dust in the air is collected by the dust collecting paper 1.
Attach to 8.

Therefore, the clean air from which dust has been removed passes through the dust collecting paper 18 and flows into the inside of the roll accommodating portion 15,
Further, it passes through the ventilation hole 5a of the base 5 and passes through the flow path 22 formed between the lower end of the cover 3 and the bottom portion 4 of the main body 1 to diffuse to the surroundings.

However, since only a small amount of air is sucked in by the ion wind, when the air cleaning device is installed in a large room, the fan start switch 8 is slid to the "weak" position. As a result, the impeller 6b of the fan 6 is rotationally driven, and the air inside the roll storage portion 15 is sucked downward, so that the air around the cover 3 is forcibly sucked.

As a result, the amount of air sucked in is increased and the dust adsorption efficiency is further enhanced, as compared with the case where only the ion wind is used.

When the indoor air is cleaned in a shorter time, the fan start switch 8 is slid to the "strong" position. As a result, the impeller 6b of the fan 6 rotates at a higher speed, and the amount of air sucked into the device from the periphery of the cover 3 increases, so that the air in the room can be cleaned in a short time even in a large room.

As described above, the amount of air sucked into the apparatus can be increased / decreased step by step by switching the fan start switch 8 between off, weak, and strong. Therefore, the amount of air can be changed according to the size of the room or the degree of air pollution. The air suction amount can be adjusted, and the air in a large room can be efficiently cleaned by activating the fan 6.

[0039]

As described above, since the electrostatic air purifying apparatus according to the present invention is provided with the cutter on the outer circumference of the roll accommodating section and the pressing member for pressing the cutter against the outer circumference of the roll accommodating section, it has been used. Since the dust collecting paper can be easily cut, commercially available roll paper without perforations can be used, and even if there is no scissors, the dust collecting paper pulled out from the roll storage section can be cut to a predetermined length. You can
Further, since the cutter can lock the end of the dust collecting paper wound around the roll storage part, it is not necessary to prepare a separate metal stopper, and the dust collecting paper can be easily engaged without being lost. It has features such as stopping.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of an electrostatic air purifying device according to the present invention.

2 is a front view of the electrostatic air purifier shown in FIG. 1. FIG.

FIG. 3 is a side view showing a main body and a dust unit with a cover removed.

FIG. 4 is a side view of the cover.

FIG. 5 is an enlarged perspective view showing a main part of the present invention.

FIG. 6 is a cross-sectional view of a roll storage part.

FIG. 7 is a view showing a bearing that supports a cutter.

FIG. 8 is a cross-sectional view showing a cutter and a pressing portion.

FIG. 9 is a side view showing a cutter and a pressing portion.

FIG. 10 is a cross-sectional view showing an enlarged main part of the present invention.

[Explanation of symbols]

 1 Device Main Body 2 Dust Collection Unit 3 Cover 4 Bottom 5 Base 6 Fan 7 Power Switch 8 Fan Start Switch 12 Locking Mechanism 13 Ionizing Electrode 15 Roll Storage Section 16 Dust Collection Electrode 18 Dust Collection Paper 19 Roll Presser 23 Paper Drawout 24 Cutter 25 Bearing 26 Pressing part

Claims (1)

(57) [Scope of utility model registration request] 1. A dust collecting paper pulled out from a paper outlet of a roll accommodating portion is wound around a dust collecting electrode on the outer periphery of the roll accommodating portion, and dust in the air is removed by discharge between the ionizing electrode and the dust collecting electrode. In an electrostatic air purifying device for adsorbing dust collection paper, a cutter for cutting the dust collection paper drawn out from the paper drawer is provided on the outer periphery of the roll storage part, and the roll storage part outer circumference is drawn out from the paper drawer An electrostatic air purifying apparatus comprising a pressing member that presses the cutter against the outer circumference of the roll accommodating portion so as to hold the end of the dust collecting paper wound around the roller.