JPH0642750Y2 - 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 by using ionic wind.

[0002]

2. Description of the Related Art As a conventional electrostatic air cleaning device, there is, for example, the device disclosed in Japanese Patent Laid-Open No. 2-198650 previously proposed by the present applicant.

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.

[0004]

However, in the conventional device, since the air flows in and out only by the ion wind, the air suction force is weak and the amount of air inflow and outflow is limited. When installed, there is a problem that only air around the device can be sucked. Therefore, it takes a considerable amount of time to clean the air in the entire room, and it has been impossible to efficiently clean the air in a place away from the apparatus. Therefore, it has been considered to provide the main body with a fan for forcibly sucking the indoor air into the device. However, when a fan is installed below the roll accommodating part that stores the roll of dust collecting paper to suck the air between both electrodes, dust is collected on the dust collecting paper from the gap on the outer circumference of the roll retainer provided at the top of the roll accommodating part. The non-adsorbed air flows in, and the ratio of dust contained in the air flowing out of the device increases.

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

[0006]

SUMMARY OF THE INVENTION According to the present invention, a dust collecting electrode is provided on the outer periphery of the dust collector so as to face the ionizing electrode, and a roll of dust collecting paper is accommodated therein. A roll pressing member for pressing a roll, a blower unit provided below the roll accommodating portion for sucking air flowing between the ionization electrode and the dust collecting electrode, and provided on the outer periphery of the roll pressing member, And a seal member that seals between the inner wall of the storage portion and the inner wall.

[0007]

[Function] The air flowing between the ionization electrode and the dust collecting electrode is forcibly sucked by the fan, so that the amount of air flowing between both electrodes is increased and a wide range of air can be cleaned in a short time. In addition, since the space between the inner wall of the roll accommodating portion and the outer periphery of the roll pressing member is sealed, it is possible to prevent air from being adsorbed by dust collecting paper.

[0008]

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 (blower means) 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.
Is provided. This fan 6 is a ventilation hole 5 of the base 5.
An impeller 6b provided so as to be located in the flow path 22 between the lower end of the cover 3 through which the air from a flows and the bottom portion 4 and having a plurality of blades 6a, and an impeller 6b provided inside the main body 1.
And a motor 6c (indicated by a broken line in FIG. 1) for rotationally driving.

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.

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 circumference, and a slit (not shown) for drawing the dust collecting paper 18 to the outside is formed in a part of the cylindrical portion.

It should be noted that the dust collecting electrode 16 is also used in the roll storage section 15
Is formed on the entire circumference except for the slit portion for drawing the dust collecting paper.

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.

Reference numeral 19 denotes a disc-shaped roll retainer (roll retainer member), which has a central hole 19a through which the shaft 11 penetrates in the center as shown in FIGS.
A seal member 20 having a U-shaped cross section is fitted to seal the space between and. Therefore, the roll retainer 19 abuts on the upper surface of the roll 17 to hold the roll 17 so that it does not move up and down, and the air from which dust on the upper portion of the storage portion 15 has not been removed is sucked by the start of the fan 6 by the seal member 20. Prevent that.

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.

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 on the entire circumference of the cylindrical roll accommodating portion 15, lines of electric force from the ionizing 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 to roll. 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 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 slit 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 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 as compared with the case of using only the ion wind, and the adsorption efficiency of dust collection is further improved.

When the room 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 around 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 or decreased in stages by switching the fan start switch 8 off, weak, or 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.

When the fan 6 as described above is activated and the air in the roll accommodating portion 15 is sucked downward, the air above the roll retainer 19 comes from the gap between the outer periphery of the roll retainer 19 and the roll accommodating portion 15. May be inhaled. However, since the ring-shaped sealing member 20 is fitted on the outer periphery of the disc-shaped roll retainer 19, the outer periphery of the roll retainer 19 and the inner wall 15c of the roll accommodating portion 15 are hermetically sealed, The upper part of the presser foot 19 is sealed. Since the shaft 11 is fitted into the central hole 19a of the roll retainer 19 without any clearance, it is not necessary to seal the central hole 19a.

Therefore, the air in the space above the roll retainer 19, that is, the air from which dust has not been removed by the dust collecting paper 18, is prevented from mixing with the clean air that has passed through the dust collecting paper 18, and the air flowing out of the apparatus. It is possible to prevent the proportion of air containing dust from increasing, but in the above embodiment, the fan 6 is provided between the bottom portion 4 of the main body 1 and the base on which the dust collecting unit 2 is mounted. The installation location of the fan 6 is not limited to this, and the point is that the fan 6 may be provided in the middle of the flow path of the air. Further, the fan starting switch 8 may have a switch structure that can adjust the rotation of the impeller 6b steplessly.

[0030]

As described above, in the electrostatic air purifying device according to the present invention, the air flowing between the ionizing electrode and the dust collecting electrode is forcibly blown by the blowing means, so that the air suction force is enhanced. By increasing the amount of air flowing between both electrodes, a wider range of air can be cleaned in a short time, and dust floating in the air can be efficiently removed. further,
The space between the outer periphery of the roll pressing member and the inner wall of the roll housing is sealed by the sealing member, and the air above the roll pressing member can be prevented from being sucked by the air blower, and clean air with dust adsorbed on the dust collecting paper. In addition, it has a feature that air containing dust from the upper part of the roll pressing member can be prevented from entering.

[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 a perspective view of a roll retainer.

FIG. 6 is a vertical sectional view of a roll retainer.

[Explanation of symbols]

 1 Device 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 20 Sealing Member

Claims (1)

[Scope of utility model registration request] 1. A roll accommodating portion, which has a dust collecting electrode facing the ionizing electrode on the outer periphery thereof and in which a roll of dust collecting paper is accommodated, and a roll pressing member for pressing the roll on the upper part of the roll accommodating portion. An air blower that is provided below the roll accommodating portion and that sucks air flowing between the ionization electrode and the dust collecting electrode, and an inner wall of the roll accommodating portion that is provided on the outer circumference of the roll pressing member. An electrostatic air purifier comprising a sealing member for sealing.